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M02.3

Reiter's disease

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 18 never code together
M02code
Excludes1
  • Behçet's disease (M35.2)M35.2
  • direct infections of joint in infectious and parasitic diseases classified elsewhere (M01.-)M01.-
  • postmeningococcal arthritis (A39.84)A39.84
  • mumps arthritis (B26.85)B26.85
  • rubella arthritis (B06.82)B06.82
  • syphilis arthritis (late) (A52.77)A52.77
  • rheumatic fever (I00)I00
  • tabetic arthropathy [Charcôt's] (A52.16)A52.16
M00-M99chapter
Excludes2
  • arthropathic psoriasis (L40.5-)L40.5-
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • compartment syndrome (traumatic) (T79.A-)T79.A-
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 8
M02code
Code first
  • underlying disease, such as:
  • congenital syphilis [Clutton's joints] (A50.5)A50.5
  • enteritis due to Yersinia enterocolitica (A04.6)A04.6
  • infective endocarditis (I33.0)I33.0
  • viral hepatitis (B15-B19)B15-B19
M02.3code
Inclusion terms
  • Reactive arthritis
M00-M25block
Includes
  • Disorders affecting predominantly peripheral (limb) joints
M00-M99chapter
Notes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here filed at null

No alphabetic index entry points at this code.

Alongside this code 5 same parent — M02
M02.0 Arthropathy following intestinal bypass category M02.1 Postdysenteric arthropathy category M02.2 Postimmunization arthropathy category M02.8 Other reactive arthropathies category M02.9 Reactive arthropathy, unspecified
Subordinate codes 10
M02.30 Reiter's disease, unspecified site M02.31 Reiter's disease, shoulder M02.32 Reiter's disease, elbow M02.33 Reiter's disease, wrist M02.34 Reiter's disease, hand M02.35 Reiter's disease, hip M02.36 Reiter's disease, knee M02.37 Reiter's disease, ankle and foot M02.38 Reiter's disease, vertebrae M02.39 Reiter's disease, multiple sites
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
no
Code set
FY2026
Parent
M02
Block
M00-M25
Siblings
5
Subordinate
10

Present FY2024–FY2027.