M91: Juvenile osteochondrosis of hip and pelvis
Codes under M91 (Juvenile osteochondrosis of hip and pelvis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| M91.0 | Juvenile osteochondrosis of pelvis | ✓ |
| M91.0 | Juvenile osteochondrosis of pelvis | ✓ |
| M91.1 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes] | — |
| M91.1 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes] | — |
| M91.2 | Coxa plana | — |
| M91.2 | Coxa plana | — |
| M91.3 | Pseudocoxalgia | — |
| M91.3 | Pseudocoxalgia | — |
| M91.4 | Coxa magna | — |
| M91.4 | Coxa magna | — |
| M91.8 | Other juvenile osteochondrosis of hip and pelvis | — |
| M91.8 | Other juvenile osteochondrosis of hip and pelvis | — |
| M91.9 | Juvenile osteochondrosis of hip and pelvis, unspecified | — |
| M91.9 | Juvenile osteochondrosis of hip and pelvis, unspecified | — |
| M91.10 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], unspecified leg | ✓ |
| M91.10 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], unspecified leg | ✓ |
| M91.11 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], right leg | ✓ |
| M91.11 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], right leg | ✓ |
| M91.12 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], left leg | ✓ |
| M91.12 | Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], left leg | ✓ |
| M91.20 | Coxa plana, unspecified hip | ✓ |
| M91.20 | Coxa plana, unspecified hip | ✓ |
| M91.21 | Coxa plana, right hip | ✓ |
| M91.21 | Coxa plana, right hip | ✓ |
| M91.22 | Coxa plana, left hip | ✓ |
| M91.22 | Coxa plana, left hip | ✓ |
| M91.30 | Pseudocoxalgia, unspecified hip | ✓ |
| M91.30 | Pseudocoxalgia, unspecified hip | ✓ |
| M91.31 | Pseudocoxalgia, right hip | ✓ |
| M91.31 | Pseudocoxalgia, right hip | ✓ |
| M91.32 | Pseudocoxalgia, left hip | ✓ |
| M91.32 | Pseudocoxalgia, left hip | ✓ |
| M91.40 | Coxa magna, unspecified hip | ✓ |
| M91.40 | Coxa magna, unspecified hip | ✓ |
| M91.41 | Coxa magna, right hip | ✓ |
| M91.41 | Coxa magna, right hip | ✓ |
| M91.42 | Coxa magna, left hip | ✓ |
| M91.42 | Coxa magna, left hip | ✓ |
| M91.80 | Other juvenile osteochondrosis of hip and pelvis, unspecified leg | ✓ |
| M91.80 | Other juvenile osteochondrosis of hip and pelvis, unspecified leg | ✓ |
| M91.81 | Other juvenile osteochondrosis of hip and pelvis, right leg | ✓ |
| M91.81 | Other juvenile osteochondrosis of hip and pelvis, right leg | ✓ |
| M91.82 | Other juvenile osteochondrosis of hip and pelvis, left leg | ✓ |
| M91.82 | Other juvenile osteochondrosis of hip and pelvis, left leg | ✓ |
| M91.90 | Juvenile osteochondrosis of hip and pelvis, unspecified, unspecified leg | ✓ |
| M91.90 | Juvenile osteochondrosis of hip and pelvis, unspecified, unspecified leg | ✓ |
| M91.91 | Juvenile osteochondrosis of hip and pelvis, unspecified, right leg | ✓ |
| M91.91 | Juvenile osteochondrosis of hip and pelvis, unspecified, right leg | ✓ |
| M91.92 | Juvenile osteochondrosis of hip and pelvis, unspecified, left leg | ✓ |
| M91.92 | Juvenile osteochondrosis of hip and pelvis, unspecified, left leg | ✓ |
Frequently asked questions
What is ICD-10-CM code M91?
M91 is an ICD-10-CM category covering Juvenile osteochondrosis of hip and pelvis. It contains 50 more specific diagnosis codes, 38 of which are billable.
Is M91 a billable code?
No — M91 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example M91.0 — Juvenile osteochondrosis of pelvis). 38 of the 50 codes under M91 are billable.
What codes fall under M91?
M91 includes M91.0, M91.0, M91.1, M91.1, M91.2, plus 45 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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