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	✓
M91.1	Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes]	—
M91.2	Coxa plana	—
M91.3	Pseudocoxalgia	—
M91.4	Coxa magna	—
M91.8	Other juvenile osteochondrosis of hip and pelvis	—
M91.9	Juvenile osteochondrosis of hip and pelvis, unspecified	—
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	✓
M91.12	Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], left leg	✓
M91.20	Coxa plana, unspecified hip	✓
M91.21	Coxa plana, right hip	✓
M91.22	Coxa plana, left hip	✓
M91.30	Pseudocoxalgia, unspecified hip	✓
M91.31	Pseudocoxalgia, right hip	✓
M91.32	Pseudocoxalgia, left hip	✓
M91.40	Coxa magna, unspecified hip	✓
M91.41	Coxa magna, right hip	✓
M91.42	Coxa magna, left hip	✓
M91.80	Other juvenile osteochondrosis of hip and pelvis, unspecified leg	✓
M91.81	Other juvenile osteochondrosis of hip and pelvis, right leg	✓
M91.82	Other juvenile osteochondrosis of hip and pelvis, left leg	✓
M91.90	Juvenile osteochondrosis of hip and pelvis, unspecified, unspecified leg	✓
M91.91	Juvenile osteochondrosis of hip and pelvis, unspecified, right leg	✓
M91.92	Juvenile osteochondrosis of hip and pelvis, unspecified, left leg	✓

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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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