M95.4
Acquired deformity of chest and rib
M95.4 (also written M954) is a billable ICD-10-CM diagnosis code for acquired deformity of chest and rib. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 10 codes in category M95 (Other acquired deformities of musculoskeletal system and connective tissue). The Alphabetic Index lists it under 15 entries. Its coding notes include 16 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- 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.-)
Also from chapter/block level (10 notes)
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Musculoskeletal Rehabilitation clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Notes
Also from chapter/block level (1 note)
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 15 entries
- Barrel chest
- Concavity chest wall
- Deformity, chest (acquired) (wall)
- Deformity, rib (acquired)
- Deformity, sternum (acquired)
- Deformity, thorax (acquired) (wall)
- Depression (acute) (mental), chest wall
- Depression (acute) (mental), sternum
- Funnel, breast (acquired)
- Funnel, chest (acquired)
- Pectus, carinatum (congenital), acquired
- Pectus, excavatum (congenital), acquired