M91.4

Non-billable

Coxa magna

M91.4 is the ICD-10-CM code for Coxa magna. It is a non-billable category code — use a more specific child code such as M91.40 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M91
Subcodes
3
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code M91.4?
M91.4 is the ICD-10-CM code for "Coxa magna". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M91.4 a billable code?
No — M91.4 is a non-billable header code. Use a more specific child code (such as M91.40) for billing.
What are the subcodes of M91.4?
M91.4 has 3 more specific child codes, including M91.40, M91.41, M91.42.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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