M20 vs M95

M20 (Acquired deformities of fingers and toes) compared with M95 (Other acquired deformities of musculoskeletal system and connective tissue), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. M95 carries an Excludes2 note covering M20: “acquired deformities of limbs (M20-M21)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

	M20Acquired deformities of fingers and toes	M95Other acquired deformities of musculoskeletal system and connective tissue
Billing status	Non-billable header Report instead: M20.001, M20.002, M20.009, M20.011, M20.012	Non-billable header Report instead: M95.0, M95.10, M95.11, M95.12, M95.2
Classification	M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)	M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)
Definition	Acquired deformities of fingers and toes is a non-billable ICD-10-CM category code (M20).	Other acquired deformities of musculoskeletal system and connective tissue is a non-billable ICD-10-CM category code (M95).

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources