XVI.  SYMPTOMS, SIGNS, AND ILL-DEFINED CONDITIONS
This section includes symptoms, signs, abnormal results of laboratory or other
investigative procedures, and ill-defined conditions regarding which no
diagnosis classifiable elsewhere is recorded.
Signs and symptoms that point rather definitely to a given diagnosis are
assigned to some category in the preceding part of the classification.  In
general, categories 780-796 include the more ill-defined conditions and
symptoms that point with perhaps equal suspicion to two or more diseases or to
two or more systems of the body, and without the necessary study of the case
to make a final diagnosis.  Practically all categories in this group could be
designated as "not otherwise specified," or as "unknown etiology," or as
"transient."
The conditions and signs or symptoms included in categories 780-796 consist
of: (a) cases for which no more specific diagnosis can be made even after all
facts bearing on the case have been investigated; (b) signs or symptoms
existing at the time of initial encounter that proved to be transient and
whose causes could not be determined; (c) provisional diagnoses in a patient
who failed to return for further investigation or care; (d) cases referred
elsewhere for investigation or treatment before the diagnosis was made; (e)
cases in which a more precise diagnosis was not available for any other
reason; (f) certain symptoms which represent important problems in medical
care and which it might be desired to classify in addition to a known cause.
                            SYMPTOMS (780-789)
780     General symptoms
780.0   Coma and stupor
Drowsiness                        Somnolence
Semicoma                          Unconsciousness
Excludes:    coma originating in the perinatal period (779.2)
780.1   Hallucinations
Excludes:    visual hallucinations (368.1)
             when part of a pattern of mental disorder
780.2   Syncope and collapse
Blackout                          Vasovagal attack
Fainting
Excludes:    carotid sinus syncope (337.0)
             neurocirculatory asthenia (306.2)
             orthostatic hypotension (458.0)
             shock NOS (785.5)
                          ICD-9/Ch16.TXT - pg. 1

780.3   Convulsions
Convulsions:
    NOS
    febrile
    infantile
Fit NOS
Excludes:    convulsions in newborn (779.0)
             epileptic convulsions (345.-)
780.4   Dizziness and giddiness
Vertigo NOS
Excludes:    Mnire's disease and other specified vertiginous syndromes
                  (386.-)
780.5   Sleep disturbances
Insomnia                          Inversion of sleep rhythm
Excludes:    when of nonorganic origin (307.4)
780.6   Pyrexia of unknown origin
Chills with fever                 Hyperpyrexia NOS
Fever NOS
Excludes:    pyrexia of unknown origin during:
                  labor (659.2)
                  the puerperium (672)
780.7   Malaise and fatigue
Asthenia NOS                      Postviral (asthenic) syndrome
Lethargy                          Tiredness
Excludes:    combat fatigue (308.-)
             fatigue during pregnancy (646.8)
             neurasthenia (300.5)
             senile asthenia (797)
780.8   Hyperhidrosis
Excessive sweating
780.9   Other general symptoms
Amnesia (retrograde)              Hypothermia, not associated with low
Generalized pain                       environmental temperature
                          ICD-9/Ch16.TXT - pg. 2

Excludes:    hypothermia:
                  NOS (accidental) (991.6)
                  due to anesthesia (995.8)
             memory disturbance when part of a pattern of mental disorder
781     Symptoms involving nervous and musculoskeletal systems
Excludes:    depression NOS (311)
             disorders specifically relating to:
                  back (724.-)
                  hearing (388.-, 389.-)
                  joint (718.-, 719.-)
                  limb (729.-)
                  neck (723.-)
                  vision (368.-, 369.-)
             pain in limb (729.5)
781.0   Abnormal involuntary movements
Abnormal head movements           Spasms NOS
Fasciculation                     Tremor NOS
Excludes:    chorea NOS (333.5)
             infantile spasms (345.6)
             spastic paralysis (342-344)
             specified movement disorders classifiable to 333.- (333.-)
             when of nonorganic origin (307.2, 307.3)
781.1   Disturbances of sensation of smell and taste
Anosmia                           Parosmia
781.2   Abnormality of gait
Gait:                             Gait:
    ataxic                            spastic
    paralytic                         staggering
Excludes:    difficulty in walking (719.7)
             locomotor ataxia (094.2)
781.3   Lack of coordination
Ataxia NOS                        Muscular incoordination
Excludes:    ataxic gait (781.2)
             cerebellar ataxia (334.-)
             vertigo NOS (780.4)
781.4   Transient paralysis of limb
Monoplegia, transient NOS
Excludes:    paralysis (342-344)
                          ICD-9/Ch16.TXT - pg. 3

781.5   Clubbing of fingers
781.6   Meningismus
781.7   Tetany
Carpopedal spasm
Excludes:    hysterical (300.1)
             psychogenic (306.0)
781.9   Other
Abnormal posture
782     Symptoms involving skin and other integumentary tissue
782.0   Disturbance of skin sensation
Anesthesia of skin                Hypoesthesia
Burning or prickling              Numbness
    sensation                     Paresthesia
Hyperesthesia                     Tingling
782.1   Rash and other nonspecific skin eruption
782.2   Localized superficial swelling, mass or lump
Subcutaneous nodules
Excludes:    localized adiposity (278.1)
782.3   Edema
Localized edema
Excludes:    ascites (789.5)
             edema of:
                  newborn NOS (778.5)
                  pregnancy (642.-, 646.1)
             fluid retention (276.6)
             hydrops fetalis (773.3, 778.0)
             hydrothorax (511.8)
             nutritional edema (262)
782.4   Jaundice unspecified, not of newborn
Cholemia NOS                      Icterus NOS
782.5   Cyanosis
Excludes:    newborn (770.8)
                          ICD-9/Ch16.TXT - pg. 4

782.6   Pallor and flushing
782.7   Spontaneous ecchymoses
Petechiae
Excludes:    ecchymosis in fetus or newborn (772.6)
             purpura (287.-)
782.8   Changes in skin texture
Induration of skin                Thickening of skin
782.9   Other
783     Symptoms concerning nutrition, metabolism and development
783.0   Anorexia
Loss of appetite
Excludes:    anorexia nervosa (307.1)
             loss of appetite of nonorganic origin (307.5)
783.1   Abnormal weight gain
Excludes:    excessive weight gain in pregnancy (646.1)
             obesity (278.0)
783.2   Abnormal loss of weight
783.3   Feeding difficulties and mismanagement
Feeding problem (infant) (elderly)
Excludes:     feeding problems in newborn (779.3)
              infantile feeding disturbance of nonorganic origin (307.5)
783.4   Lack of expected normal physiological development
Delayed milestone                 Physical retardation
Failure to thrive                 Short stature
Lack of growth
Excludes:    delay in sexual development and puberty (259.0)
             specific delays in mental development (315.-)
783.5   Polydipsia
Excessive thirst
783.6   Polyphagia
                          ICD-9/Ch16.TXT - pg. 5

Excessive eating                  Hyperalimentation NOS
Excludes:    disorders of eating of nonorganic origin (307.5)
783.9   Other
Excludes:    abnormal basal metabolic rate (794.7)
             dehydration (276.5)
             other disorders of fluid, electrolyte, and acid-base balance
                  (276.-)
784     Symptoms involving head and neck
Excludes:    encephalopathy NOS (348.3)
784.0   Headache
Facial pain
Excludes:    atypical face pain (350.2)
             migraine (346.-)
             tension headache (307.8)
784.1   Throat pain
Excludes:    dysphagia (787.2)
             neck pain (723.1)
             sore throat (462, 472.1)
784.2   Swelling, mass, or lump in head and neck
Space-occupying lesion, intracranial NOS
784.3   Aphasia
Excludes:    developmental aphasia (315.3)
784.4   Voice disturbance
Aphonia                           Hypernasality
Hoarseness                        Hyponasality
784.5   Other speech disturbance
Dysarthria                        Slurred speech
Dysphasia
Excludes:    stammering and stuttering (307.0)
             when of nonorganic origin (307.0, 307.9)
784.6   Other symbolic dysfunction
                          ICD-9/Ch16.TXT - pg. 6

Acalculia                         Apraxia
Agnosia                           Dyslexia
Agraphia
Excludes:    developmental learning retardations (315.-)
784.7   Epistaxis
Hemorrhage from nose              Nosebleed
784.8   Hemorrhage from throat
Excludes:    hemoptysis (786.3)
784.9   Other
Choking sensation                 Mouth breathing
Halitosis                         Sneezing
785     Symptoms involving cardiovascular system
Excludes:    heart failure NOS (428.9)
785.0   Tachycardia, unspecified
Excludes:    paroxysmal tachycardia (427.0-427.2)
785.1   Palpitations
Awareness of heart beat
Excludes:    specified dysrhythmias (427.-)
785.2   Functional and undiagnosed cardiac murmurs
Heart murmur (benign) (innocent) NOS
785.3   Other abnormal heart sounds
Cardiac dullness, increased or decreased
Friction fremitus, cardiac
Precordial friction
785.4   Gangrene
Gangrene:
    NOS
    spreading cutaneous
Phagedena
Excludes:    gangrene of certain sites
             gas gangrene (040.0)
                          ICD-9/Ch16.TXT - pg. 7

785.5   Shock without mention of trauma
Failure of peripheral circulation
Shock:
    NOS
    cardiogenic
    endotoxic
    hypovolemic
    septic
Excludes:    shock:
                  anesthetic (995.4)
                  anaphylactic (995.0)
                       due to serum (999.4)
                  electric (994.8)
                  following abortion (639.5)
                  lightning (994.0)
                  obstetrical (669.1)
                  postoperative (998.0)
                  traumatic (958.4)
785.6   Enlargement of lymph nodes
Lymphadenopathy                   "Swollen glands"
Excludes:    lymphadenitis (289.-, 683)
785.9   Other
Bruit NOS
786     Symptoms involving respiratory system and other chest symptoms
786.0   Dyspnea and respiratory abnormalities
Orthopnea                         Shortness of breath
Respiratory:                      Tachypnea
    distress                      Wheezing
    insufficiency
Excludes:    hyperventilation, psychogenic (306.1)
             respiratory distress of newborn (770.8)
             respiratory distress syndrome (newborn) (769)
             respiratory failure (799.1)
                  newborn (770.8)
786.1   Stridor
Excludes:    congenital stridor (748.3)
786.2   Cough
Excludes:    psychogenic cough (306.1)
                          ICD-9/Ch16.TXT - pg. 8

786.3   Hemoptysis
Cough with hemorrhage             Pulmonary hemorrhage NOS
Excludes:    pulmonary hemorrhage of newborn (770.3)
786.4   Abnormal sputum
Excessive sputum
786.5   Chest pain
Pain:                             Painful respiration
    anterior chest wall           Pleurodynia
    pleuritic
    precordial
Excludes:    epidemic pleurodynia (074.1)
             pain in breast (611.7)
786.6   Swelling, mass or lump in chest
Excludes:    lump in breast (611.7)
786.7   Abnormal chest sounds
Abnormal percussion, chest        Rales
Friction sounds, chest            Tympany, chest
Excludes:    wheezing (786.0)
786.8   Hiccough
Excludes:    psychogenic hiccough (306.1)
786.9   Other
Breath-holding spell
787     Symptoms involving digestive system
Excludes:    pylorospasm (537.8)
                  congenital (750.5)
787.0   Nausea and vomiting
Excludes:    hematemesis NOS (531.- to 534.-, 578.0)
             vomiting:
                  bilious, following gastrointestinal surgery (564.3)
                  cyclical (536.2)
                       psychogenic (306.4)
                  excessive, in pregnancy (643.-)
                  habit (536.2)
                          ICD-9/Ch16.TXT - pg. 9

                  of newborn (779.3)
                  psychogenic NOS (307.5)
787.1   Heartburn
Excludes:    dyspepsia (536.8)
787.2   Dysphagia
Difficulty in swallowing
787.3   Flatulence, eructation, and gas pain
Bloating
Excludes:    aerophagy (306.4)
787.4   Visible peristalsis
787.5   Abnormal bowel sounds
787.6   Incontinence of feces
Encopresis NOS
Excludes:    when of nonorganic origin (307.7)
787.7   Abnormal feces
Excludes:    melaena:
                  NOS (578.1)
                  newborn (772.4)
787.9   Other
Excludes:    gastrointestinal hemorrhage (578.-)
             intestinal obstruction (560.-)
             specific functional digestive disorders (530.-, 536.-, 564.-)
788     Symptoms involving urinary system
Excludes:    hematuria (599.7)
             small kidney of unknown cause (589.-)
             uremia NOS (586.-)
788.0   Renal colic
788.1   Dysuria
788.2   Retention of urine
788.3   Incontinence of urine
                          ICD-9/Ch16.TXT - pg. 10

Enuresis NOS
Excludes:    when of nonorganic origin (307.6)
             stress incontinence (female) (625.6)
788.4   Frequency of urination and polyuria
Frequency of micturition          Nocturia
788.5   Oliguria and anuria
Excludes:    when complicating:
                  abortion (634-638 with fourth digit .3, 639.3)
                  ectopic or molar pregnancy (639.3)
                  pregnancy, childbirth, or the puerperium (646.2)
788.6   Other abnormality of urination
Slowing of urinary stream         Splitting of urinary stream
788.7   Urethral discharge
788.8   Extravasation of urine
788.9   Other
Extrarenal uremia
789     Other symptoms involving abdomen and pelvis
Excludes:    symptoms referable to genital organs:
                  female (625.-)
                  male (302.7, 607.-, 608.-)
789.0   Abdominal pain
Abdominal tenderness              Colic:
Epigastric pain                        NOS
Umbilical pain                         infantile
Excludes:    renal colic (788.0)
789.1   Hepatomegaly
789.2   Splenomegaly
789.3   Abdominal or pelvic swelling, mass, or lump
789.4   Abdominal rigidity
789.5   Ascites
Fluid in peritoneal cavity
                          ICD-9/Ch16.TXT - pg. 11

789.9   Other
                   NONSPECIFIC ABNORMAL FINDINGS (790-796)
790     Nonspecific findings on examination of blood
Excludes:    abnormality of:
                  coagulation (286.-)
                  platelets (287.-)
                  thrombocytes (287.-)
                  white blood cells (288.-)
790.0   Abnormality of red blood cells
Abnormal red cell:                Anisocytosis
    morphology NOS                Poikilocytosis
    volume NOS
Excludes:    anemias (280-285, 776.5, 776.6)
             polycythemia (238.4, 289.0, 289.6, 776.4)
790.1   Elevated sedimentation rate
790.2   Abnormal glucose tolerance test
Diabetes:                         Prediabetes
    chemical
    latent
Excludes:    when complicating pregnancy, childbirth, or the puerperium
                  (648.8)
790.3   Excessive blood level of alcohol
790.4   Other nonspecific elevation oflevels of transaminase or lactic acid
        dehydrogenase [LDH]
790.5   Other nonspecific abnormal serum enzyme levels
Abnormal serum level of:
    acid phosphatase
    alkaline phosphatase
    amylase
    lipase
Excludes:    deficiency of circulating enzymes (277.6)
790.6   Other abnormal blood chemistry
Abnormal blood levels of:
    cobalt
    copper
                          ICD-9/Ch16.TXT - pg. 12

    iron
    lithium
    magnesium
    mineral
    zinc
Excludes:    abnormality of electrolyte or acid-base balance (276.-)
             hyperglycemia NOS (250.9)
             hypoglycemia NOS (251.2)
             specific findings indicating abnormality of:
                  amino-acid transport and metabolism (270.-)
                  carbohydrate transport and metabolism (271.-)
                  lipid metabolism (272.-)
             uremia NOS (586)
790.7   Bacteremia, unspecified
790.8   Viremia, unspecified
790.9   Other
791     Nonspecific findings on examination of urine
Excludes:    bacteriuria (599.0)
             hematuria NOS (599.7)
             specific findings indicating abnormality of:
                  amino-acid transport and metabolism (270.-)
                  carbohydrate transport and metabolism (271.-)
791.0   Proteinuria
Albuminuria                       Bence-Jones proteinuria
Excludes:    when arising during pregnancy or the puerperium (642.-, 646.2)
             postural proteinuria (593.6)
791.1   Chyluria
Excludes:    filarial (125.-)
791.2   Hemoglobinuria
791.3   Myoglobinuria
791.4   Biliuria
791.5   Glycosuria
791.6   Acetonuria
791.7   Other cells and casts in urine
                          ICD-9/Ch16.TXT - pg. 13

791.9   Other
Crystalluria
792     Nonspecific abnormal findings in other body substances
Excludes:    chromosomal studies (795.2)
792.0   Cerebrospinal fluid
792.1   Stool contents
Abnormal stool color              Mucus in stool
Fat in stool                      Pus in stool
792.2   Semen
Abnormal spermatozoa
Excludes:    azoospermia (606)
             oligospermia (606)
792.3   Amniotic fluid
792.4   Saliva
Excludes:    chromosomal studies (795.2)
792.9   Other
Peritoneal fluid                  Synovial fluid
Pleural fluid                     Vaginal fluids
793     Nonspecific abnormal findings on radiological and other examination
        of body structure
Includes:    nonspecific abnormal findings of:
                  thermography
                  ultrasound examination [echogram]
                  x-ray examination
Excludes:    abnormal results of function studies (794.-)
793.0   Skull and head
793.1   Lung field
Coin lesion, lung                 Shadow, lung
793.2   Other intrathoracic organ
Abnormal heart shadow             Mediastinal shift
                          ICD-9/Ch16.TXT - pg. 14

793.3   Biliary tract
Nonvisualization of gallbladder
793.4   Gastrointestinal tract
793.5   Genitourinary organs
Filling defect:
    bladder
    kidney
    ureter
793.6   Abdominal area, including retroperitoneum
793.7   Musculoskeletal system
793.8   Breast
793.9   Other
794     Nonspecific abnormal results of function studies
794.0   Brain and central nervous system
Abnormal echoencephalogram        Abnormal electroencephalogram [EEG]
794.1   Peripheral nervous system and special senses
Abnormal electro-oculogram [EOG]
Abnormal electroretinogram [ERG]
Abnormal response to nerve stimulation
Abnormal visually evoked potential (VEP)
794.2   Pulmonary
Reduced:
    ventilatory capacity
    vital capacity
794.3   Cardiovascular
Abnormal electrocardiogram [ECG] [EKG]
Abnormal phonocardiogram
794.4   Kidney
Abnormal renal function test
794.5   Thyroid
794.6   Other endocrine function study
                          ICD-9/Ch16.TXT - pg. 15

794.7   Basal metabolism
Abnormal basal metabolic rate [BMR]
794.8   Liver
794.9   Other
Bladder                           Spleen
795     Nonspecific abnormal histological and immunological findings
Excludes:    nonspecific abnormalities of red blood cells (790.0)
795.0   Nonspecific abnormal Papanicolaou smear of cervix
Dyskaryotic cervical smear
795.1   Nonspecific abnormal Papanicolaou smear of other origin
795.2   Nonspecific abnormal findings on chromosomal analysis
Abnormal karyotype
795.3   Nonspecific positive culture findings
Positive culture findings in:
    nose
    sputum
    throat
    wound
795.4   Other nonspecific abnormal histological findings
795.5   Nonspecific reaction to tuberculin test
Abnormal result of Mantoux test
795.6   False positive serological test for syphilis
False positive Wassermann reaction
795.7   Other nonspecific immunological findings
Raised antibody titre             Raised level of immunoglobulins
Excludes:    isoimmunization, in pregnancy (656.1, 656.2)
                  affecting fetus or newborn (773.0-773.2)
795.8   Positive serological or viral culture findings for human
        immunodeficiency virus (HIV)
[Not to be used for underlying cause of death]
                          ICD-9/Ch16.TXT - pg. 16

796     Other nonspecific abnormal findings
796.0   Nonspecific abnormal toxicological findings
796.1   Abnormal reflex
796.2   Elevated blood pressure reading without diagnosis of hypertension
Note:   This category is to be used to record an episode of elevated
        blood pressure in a patient in whom no formal diagnosis of
        hypertension has been made, or as an incidental finding.
796.3   Nonspecific low blood pressure reading
796.4   Other abnormal clinical findings
796.9   Other
     ILL-DEFINED AND UNKNOWN CAUSES OF MORBIDITY AND MORTALITY
(797-799)
797     Senility without mention of psychosis
Old age
Excludes:    senile psychoses (290.-)
798     Sudden death, cause unknown
798.0   Sudden infant death syndrome
Cot death
Crib death
Sudden death of nonspecific cause in infancy
798.1   Instantaneous death
798.2   Death occurring in less than 24 hours from onset of symptoms, not
        otherwise explained
Death not known to be violent or instantaneous, for which no cause could be
    discovered
Died without sign of disease
798.9   Unattended death
Death in circumstances where the body of the deceased was found and no
    cause could be discovered
Found dead
799     Other ill-defined and unknown causes of morbidity and mortality
                          ICD-9/Ch16.TXT - pg. 17

799.0   Asphyxia
Excludes:    asphyxia (due to):
                  carbon monoxide (986)
                  inhalation of food or foreign body (932-934)
                  newborn (768.-)
                  traumatic (994.7)
799.1   Respiratory failure
Cardiorespiratory failure         Respiratory arrest
Excludes:    cardiac arrest (427.5)
             failure of peripheral circulation (785.5)
             respiratory failure, newborn (770.8)
             respiratory insufficiency (786.0)
799.2   Nervousness
"Nerves"
799.3   Debility, unspecified
Excludes:    asthenia (780.7)
             nervous debility (300.5)
             neurasthenia (300.5)
             senile asthenia (797)
799.4   Cachexia
799.8   Other ill-defined conditions
799.9   Other unknown and unspecified cause
Undiagnosed disease, not specified as to site or system involved
Unknown cause of morbidity or mortality
                          ICD-9/Ch16.TXT - pg. 18