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The rules say that plans must pay for a medical service or item if regular Medicare would pay for it in this case. 
You can find this rule at 42 Code of Federal Regulations (CFR) Section 422.101. 
 
The rules state that approved indications for botulinum toxin type A and toxin type B differ. The separate 
accepted indications for the botulinum toxin products will be combined into a single list of covered indications 
in this Local Coverage Determination (LCD). It is the responsibility of providers to use each drug in 
accordance with approved indications. While this policy contains a single list of covered indications, this is not 
meant to imply that botulinum toxin products are interchangeable. 
1. Coverage of botulinum toxin for certain spastic conditions will be limited to those conditions listed in 
the Billing and Coding article.  All other uses in the treatment of other types of spasm will be 
considered as investigational and therefore, non-covered by Medicare. 
2. Since organic writer's cramp is uncommon, Medicare would not expect to see the treatment of this 
condition to be billed frequently. 
3. The patient who has a spastic or excessive muscular contraction condition is usually started with a low 
dose of botulinum toxin.  Other spastic or muscular contraction conditions, such as eye muscle 
disorders, (e.g., blepharospasm) may require lesser amounts of botulinum toxin.  For larger muscle 
groups, it is generally agreed that once a maximum dose per site has been reached and there is no 
response, the treatment is discontinued.  The treatments may be resumed at a later date.  With response, 
the effect of the injections generally lasts for three months at which time the patient may require repeat 
injections to control the spastic or excessive muscular condition.  
4. It is usually considered not medically necessary to give botulinum toxin injections for spastic conditions 
more frequently than every 12 weeks. 
5. Coverage of treatments provided may be continued unless any two treatments in a row, utilizing an 
appropriate or maximum dose of botulinum toxin failed to produce satisfactory clinical response.  
6. Botulinum toxin may be covered in the treatment of achalasia. 
7. Treatment of chronic migraines will be covered when they meet the following diagnostic criteria: for 
migraine with aura and /or criteria for migraine without aura. Treatment with botulinum toxin may be 
given every 12 weeks as multiple injections around the head and neck. 
8. Botulinum toxin for chronic anal fissure may be considered for the patient who has not responded 
satisfactorily to conservative treatment. Conservative treatment may include the use of bulking agents, 
sitz baths or topical agents. 
9. Botulinum toxin is covered for hyperhidrosis that significantly affects ones quality of life and cannot 
be managed adequately with topical agents. 
 You can find these rules in Local Coverage Determination (LCD) Botulinum Toxin Type A & Type B 
(L34635). 
 
If you want to read these Medicare rules, you can go to this website www.medicareappeal.com. 
 
The Plan contract says that the Plan covers items and services in accordance with Medicare rules.