ICD-10-CM > M00-M99 > M91-M94 > M91 > M91.2 M91.2 Coxa plana Non-Billable/Non-Specific Applicable To Hip deformity due to previous juvenile osteochondrosis Codes M91.20Coxa plana, unspecified hipM91.21Coxa plana, right hipM91.22Coxa plana, left hip