M66.17
M66.17 — Rupture of synovium, ankle, foot and toes
Non-billable headerICD-10-CM
M66.17 is a non-billable header ICD-10-CM code for rupture of synovium, ankle, foot and toes. It cannot be billed on its own: choose one of the more specific child codes below.
Risk adjustment
M66.17 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 M66.17
9 child codes. Green means billable.
- M66.171Rupture of synovium, right ankle
- M66.172Rupture of synovium, left ankle
- M66.173Rupture of synovium, unspecified ankle
- M66.174Rupture of synovium, right foot
- M66.175Rupture of synovium, left foot
- M66.176Rupture of synovium, unspecified foot
- M66.177Rupture of synovium, right toe(s)
- M66.178Rupture of synovium, left toe(s)
- M66.179Rupture of synovium, unspecified toe(s)
Related codes at this level
Codes that share M66.1. If M66.17 is not quite right, the correct code is usually one of these.
Questions about M66.17
- Is M66.17 a billable ICD-10-CM code?
- No. M66.17 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M66.17 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).