M91.2 Coxa plana

Non-billable header with 3 child codes.

Applicable to

• Hip deformity due to previous juvenile osteochondrosis

Applies from M91 Juvenile osteochondrosis of hip and pelvis

Excludes1 (never code together)

• slipped upper femoral epiphysis (nontraumatic) (M93.0-)

Codes under M91.2

• M91.20 Coxa plana, unspecified hip
• M91.21 Coxa plana, right hip
• M91.22 Coxa plana, left hip

Code annotations containing back-references to M91.2

Back-references to M91.2

• Type 2 Excludes: M21 Other acquired deformities of limbs ("coxa plana (M91.2)")
• Type 2 Excludes: M21.8 Other specified acquired deformities of limbs ("coxa plana (M91.2)")

Back-references to M91

• Type 1 Excludes: M87 Osteonecrosis ("juvenile osteonecrosis (M91-M92)")
• Type 1 Excludes: M87 Osteonecrosis ("osteochondropathies (M90-M93)")

Diagnosis Index entries for M91.2

• Coxa › plana

Nearby codes

• M91.0 Juvenile osteochondrosis of pelvis
• M91.1 Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes]
• 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
• M91.2 Coxa plana (this code)
• M91.20 Coxa plana, unspecified hip
• M91.21 Coxa plana, right hip
• M91.22 Coxa plana, left hip
• M91.3 Pseudocoxalgia
• M91.30 Pseudocoxalgia, unspecified hip