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ICD-10-CM 2027

ICD-10 code for magna coxa

M91.4

Coxa magna

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Coxa › magna”. Page updated September 29, 2026.

About coding magna coxa

The ICD-10-CM code for magna coxa is M91.4 (Coxa magna).

Within M91 (juvenile osteochondrosis of hip and pelvis), M91.4 is specifically for coxa magna. Related codes cover juvenile osteochondrosis of pelvis (M91.0), juvenile osteochondrosis of head of femur [Legg-Calve-Perthes] (M91.1), coxa plana (M91.2), Pseudocoxalgia (M91.3), other juvenile osteochondrosis of hip and pelvis (M91.8) and unspecified (M91.9).

To report this condition, pick the subcode that matches the documentation: M91.40 (unspecified hip), M91.41 (right hip) and M91.42 (left hip).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about magna coxa ICD-10 codes

What is the ICD-10 code for magna coxa?

M91.4 — Coxa magna (a header code; report a more specific subcode).

Is M91.4 billable?

No. M91.4 is a header code. Report one of its more specific subcodes instead.