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ICD-10-CM 2027 diagnosis code

M02Postinfective and reactive arthropathies

Not billable — use a more specific code

M02 is a header code, so it can't be reported by itself. Choose one of the 6 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 M02

M02 is the ICD-10-CM diagnosis code for postinfective and reactive arthropathies. It belongs to block M00-M02 (infectious arthropathies) 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 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M02.0 (bypass), M02.1 (arthropathy), M02.2 (arthropathy), M02.3 (disease), M02.8 (arthropathies) and M02.9 (unspecified).

Don't report M02 together with the conditions in its Excludes1 note: Behçet's disease (M35.2), direct infections of joint in infectious and parasitic diseases classified elsewhere (M01.-), postmeningococcal arthritis (A39.84), mumps arthritis (B26.85) and 4 more.

Code first underlying disease, such as: congenital syphilis [Clutton's joints] (A50.5), enteritis due to Yersinia enterocolitica (A04.6), infective endocarditis (I33.0) and viral hepatitis (B15-B19).

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 M02

Coding notes

Excludes1Not coded here — never report together with this code
  • Behçet's disease (M35.2)
  • direct infections of joint in infectious and parasitic diseases classified elsewhere (M01.-)
  • postmeningococcal arthritis (A39.84)
  • mumps arthritis (B26.85)
  • rubella arthritis (B06.82)
  • syphilis arthritis (late) (A52.77)
  • rheumatic fever (I00)
  • tabetic arthropathy [Charcôt's] (A52.16)
Code firstSequence the underlying condition first
  • underlying disease, such as:
  • congenital syphilis [Clutton's joints] (A50.5)
  • enteritis due to Yersinia enterocolitica (A04.6)
  • infective endocarditis (I33.0)
  • viral hepatitis (B15-B19)

Notes that apply from higher levels

Instructions written at a parent level also apply to M02.

Broader instructions also apply from M00-M02 Infectious arthropathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M02

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M02

Is M02 billable?

No. M02 is a header code. Report one of its more specific subcodes instead.