M40.1 Other secondary kyphosis

Not billable (header)Chapter 13

Report one of the more specific codes below.

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Codes under this one

M40.10 Other secondary kyphosis, site unspecified
M40.12 Other secondary kyphosis, cervical region
M40.13 Other secondary kyphosis, cervicothoracic region
M40.14 Other secondary kyphosis, thoracic region
M40.15 Other secondary kyphosis, thoracolumbar region

Instructional notes

Chapter 13

Excludes2Not included here: the patient may have both; report both when both are present.

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)

Notes

Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

M40

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

congenital kyphosis and lordosis (Q76.4)
kyphoscoliosis (M41.-)
postprocedural kyphosis and lordosis (M96.-)

Code firstSequence the underlying condition first.

underlying disease

Chapter 13: Diseases of the musculoskeletal system and connective tissue · M40-M54 Dorsopathies (M40-M54)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.