M95.9 Acquired deformity of musculoskeletal system, unspecified

Billable ICD-10-CM code, FY2026.

Applies from M95 Other acquired deformities of musculoskeletal system and connective tissue

Excludes2 (not included here)

• acquired absence of limbs and organs (Z89-Z90)
• acquired deformities of limbs (M20-M21)
• congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
• deforming dorsopathies (M40-M43)
• dentofacial anomalies [including malocclusion] (M26.-)
• postprocedural musculoskeletal disorders (M96.-)

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 738.9 Acquired deformity of unspecified site (approximate)

Diagnosis Index entries for M95.9

• Deformity › acquired (unspecified site)
• Deformity › bone (acquired) NOS
• Deformity › musculoskeletal system (acquired)

Nearby codes

• M95.2 Other acquired deformity of head
• M95.3 Acquired deformity of neck
• M95.4 Acquired deformity of chest and rib
• M95.5 Acquired deformity of pelvis
• M95.8 Other specified acquired deformities of musculoskeletal system
• M95.9 Acquired deformity of musculoskeletal system, unspecified (this code)