All ICD10 Codes
M02Not billable, use a more specific code below

Postinfective and reactive arthropathies

In Infectious arthropathies (M00-M02), chapter 13: Diseases of the Musculoskeletal System and Connective Tissue

121 billable codes under M02: 72 are a CC; 73 map to HCC 92 (Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis), HCC 94 (Systemic Lupus Erythematosus and Other Specified Systemic Connective Tissue Disorders).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

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Instructional notes

Excludes1: not coded here, use a different 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 first: code the underlying condition first, then this code

  • 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)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.

Read Section I.C.13 (page 60)

All codes under M02

M02 can't be used on a claim. Pick a billable code below; grey headings group them.

M02 MS-DRGs

As the principal diagnosis, the billable codes under M02 group to these 8 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to M02

Notes on these codes point to M02.

  • M01 Excludes1: postinfective arthropathy (M02.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Arthritis

If you feel pain and stiffness in your body or have trouble moving around, you might have arthritis. Any disorder that affects the joints is often called arthritis. Joints are places where two bones meet, such as your elbow or knee.

Read more about arthritis on MedlinePlus

Infectious Arthritis

Most kinds of arthritis cause pain and swelling in your joints. Joints are places where two bones meet, such as your elbow or knee. Infectious arthritis is an infection in the joint. The infection comes from a bacterial, viral, or fungal infection that spreads from another part of the body. Symptoms of infectious arthritis include:

Read more about infectious arthritis on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.