M66.36
M66.36 — Spontaneous rupture of flexor tendons, lower leg
Non-billable headerICD-10-CM
M66.36 is a non-billable header ICD-10-CM code for spontaneous rupture of flexor tendons, lower leg. It cannot be billed on its own: choose one of the more specific child codes below.
Risk adjustment
M66.36 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead M66.36
3 child codes. Green means billable.
Related codes at this level
Codes that share M66.3. If M66.36 is not quite right, the correct code is usually one of these.
- M66.30Spontaneous rupture of flexor tendons, unspecified site
- M66.31Spontaneous rupture of flexor tendons, shoulder
- M66.32Spontaneous rupture of flexor tendons, upper arm
- M66.33Spontaneous rupture of flexor tendons, forearm
- M66.34Spontaneous rupture of flexor tendons, hand
- M66.35Spontaneous rupture of flexor tendons, thigh
- M66.37Spontaneous rupture of flexor tendons, ankle and foot
- M66.38Spontaneous rupture of flexor tendons, other site
- M66.39Spontaneous rupture of flexor tendons, multiple sites
Questions about M66.36
- Is M66.36 a billable ICD-10-CM code?
- No. M66.36 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M66.36 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Disorders of synovium and tendon (M65-M67).