ICD-10-CM › M00-M99 › M91-M94 › M91 Juvenile osteochondrosis of hip and pelvis › M91.2
Coxa plana
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
What has happened to this code
Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2012 Added to the draft code set draft Coxa plana
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from M91 Juvenile osteochondrosis of hip and pelvis
Excludes1 - never coded here
- slipped upper femoral epiphysis (nontraumatic) (M93.0-)
Inherited from the M91-M94 section Chondropathies (M91-M94)
Excludes1 - never coded here
- postprocedural chondropathies (M96.-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Flattening > hip
- Osteochondropathy > osteochondrosis
- Deformity > hip > due to juvenile osteochondrosis
- Osteochondrosis > juvenile, juvenilis > hip and pelvis > coxa plana
- Coxa > plana
Codes in the same group
| Code | Description | Status |
|---|---|---|
| M91.0 | Juvenile osteochondrosis of pelvis | Valid |
| M91.1 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes] | Not billable |
| M91.3 | Pseudocoxalgia | Not billable |
| M91.4 | Coxa magna | Not billable |
| M91.8 | Other juvenile osteochondrosis of hip and pelvis | Not billable |
| M91.9 | Juvenile osteochondrosis of hip and pelvis, unspecified | Not billable |