Concealed door hinge for the pivotable mounting of a door leaf on a door frame, comprising - a first housing insertable into a narrow side of the door leaf or the door frame and a second housing insertable into the door frame or the narrow side of the door leaf, - a multi-axis joint having two hinge bodies (3, 4) and connecting the two housings (1, 2) to each other, - first and second fastening plates (7, 8), by means of which in each case one of the housings (1, 2) is connected to the door frame or the door leaf, - wherein the hinge bodies (3, 4) are displaceably guided at a first end via a longitudinal guide in a respective one of the housings (1, 2) and are pivotably mounted at a second end via an axis of rotation - wherein the position of one of the housings (1, 2) relative to the first fastening plates arranged thereon can be changed perpendicularly to a front surface of the first fastening plates by means of an adjusting spindle, wherein the adjusting spindle is mounted in the respective fastening plate in a stationary but rotatable manner and is accommodated in a threaded bore of the housing (1, 2), - wherein each of the housings (1, 2) has a clearance in which the hinge bodies (3, 4) are inserted, characterized in that - the clearances are formed as two-stage pockets (15, 21) with pocket depths (T1, T2) that differ from one another, into which the hinge bodies (3, 4) are inserted in a closed position of the concealed door hinge, - wherein the longitudinal guide is arranged in a boundary wall of the deeper pocket, which is aligned parallel to the threaded bores (20, 25) and adjoins a bottom of the shallower pocket, and in the boundary wall of the housing (1, 2) opposite thereto, having a guide groove for accommodating a bearing body rotatably mounted on one end of the hinge body (3, 4). - a first housing insertable into a narrow side of the door leaf or the door frame and a second housing insertable into the door frame or the narrow side of the door leaf, - a multi-axis joint having two hinge bodies (3, 4) and connecting the two housings (1, 2) to each other, - first and second fastening plates (7, 8), by means of which in each case one of the housings (1, 2) is connected to the door frame or the door leaf, - wherein the hinge bodies (3, 4) are displaceably guided at a first end via a longitudinal guide in a respective one of the housings (1, 2) and are pivotably mounted at a second end via an axis of rotation - wherein the position of one of the housings (1, 2) relative to the first fastening plates arranged thereon can be changed perpendicularly to a front surface of the first fastening plates by means of an adjusting spindle, wherein the adjusting spindle is mounted in the respective fastening plate in a stationary but rotatable manner and is accommodated in a threaded bore of the housing (1, 2), - wherein each of the housings (1, 2) has a clearance in which the hinge bodies (3, 4) are inserted, - the clearances are formed as two-stage pockets (15, 21) with pocket depths (T1, T2) that differ from one another, into which the hinge bodies (3, 4) are inserted in a closed position of the concealed door hinge, - wherein the longitudinal guide is arranged in a boundary wall of the deeper pocket, which is aligned parallel to the threaded bores (20, 25) and adjoins a bottom of the shallower pocket, and in the boundary wall of the housing (1, 2) opposite thereto, having a guide groove for accommodating a bearing body rotatably mounted on one end of the hinge body (3, 4).