ICD-10-CM 2027 diagnosis code

M46Other inflammatory spondylopathies

Not billable — use a more specific code

M46 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M46

M46 is the ICD-10-CM diagnosis code for other inflammatory spondylopathies. It belongs to block M45-M49 (spondylopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M46.0 (enthesopathy), M46.1 (classified), M46.2 (vertebra), M46.3 ((pyogenic)), M46.4 (unspecified), M46.5 (spondylopathies), M46.8 (spondylopathies) and M46.9 (spondylopathy).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M46

Notes that apply from higher levels

Instructions written at a parent level also apply to M46.

Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M46

G55Excludes1

Code history

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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about M46

Is M46 billable?: No. M46 is a header code. Report one of its more specific subcodes instead.