2026 ICD-10-CM M02.8: Other reactive arthropathies

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M02.8 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software

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Code lookupM02.8

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the musculoskeletal system and connective tissue (M00-M99) / Infectious arthropathies (M00-M02)

M02.8

Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidance

Other reactive arthropathies

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

M02Postinfective and reactive arthropathies M02.8Other reactive arthropathies

Inclusion Terms

Official

No inclusion terms are included in this display for M02.8. Check the code and parent instructions in the Code Book.

Excludes 2

Official

arthropathic psoriasis (L40.5-)Inherited from M00-M99
certain conditions originating in the perinatal period (P04-P96)Inherited from M00-M99
certain infectious and parasitic diseases (A00-B99)Inherited from M00-M99
compartment syndrome (traumatic) (T79.A-)Inherited from M00-M99
complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from M00-M99
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from M00-M99
endocrine, nutritional and metabolic diseases (E00-E88)Inherited from M00-M99
injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from M00-M99
neoplasms (C00-D49)Inherited from M00-M99
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from M00-M99

Related Codes

Official

M02.80Other reactive arthropathies, unspecified site M02.81Other reactive arthropathies, shoulder M02.82Other reactive arthropathies, elbow M02.83Other reactive arthropathies, wrist M02.84Other reactive arthropathies, hand

Includes

Official

No Includes notes are included in this display for M02.8. Check the code and parent instructions in the Code Book.

Excludes 1

Official

Behçet's disease (M35.2)Inherited from M02
direct infections of joint in infectious and parasitic diseases classified elsewhere (M01.-)Inherited from M02
postmeningococcal arthritis (A39.84)Inherited from M02
mumps arthritis (B26.85)Inherited from M02
rubella arthritis (B06.82)Inherited from M02
syphilis arthritis (late) (A52.77)Inherited from M02
rheumatic fever (I00)Inherited from M02
tabetic arthropathy [Charcôt's] (A52.16)Inherited from M02

Code First

Official

underlying disease, such as:Inherited from M02
congenital syphilis [Clutton's joints] (A50.5)Inherited from M02
enteritis due to Yersinia enterocolitica (A04.6)Inherited from M02
infective endocarditis (I33.0)Inherited from M02
viral hepatitis (B15-B19)Inherited from M02

Use Additional

Official

No Use Additional Code instructions are included in this display for M02.8. Check the code and parent instructions in the Code Book.

Code Also

Official

No Code Also instructions are included in this display for M02.8. Check the code and parent instructions in the Code Book.

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Code: M02.8
Description: Other reactive arthropathies
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: No
Payment year: 2026

Coder workflow notes

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What This Code Means

M02.8 is the ICD-10-CM diagnosis code for other reactive arthropathies. M02.8 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering infectious arthropathies (m00-m02).

Header codes like M02.8 cannot be reported on claims directly; they organize child codes that share clinical context. Coders should select the billable child code that matches the documented presentation and then verify its current source-backed HCC mapping. Do not infer a child code or risk adjustment value from the header alone.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for M02.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Child Codes

M02.80Other reactive arthropathies, unspecified site

M02.81Other reactive arthropathies, shoulder

M02.82Other reactive arthropathies, elbow

M02.83Other reactive arthropathies, wrist

M02.84Other reactive arthropathies, hand

M02.85Other reactive arthropathies, hip

M02.86Other reactive arthropathies, knee

M02.87Other reactive arthropathies, ankle and foot

M02.88Other reactive arthropathies, vertebrae

M02.89Other reactive arthropathies, multiple sites

Code Hierarchy

└M02Postinfective and reactive arthropathies └M02.8Other reactive arthropathies

└M02.8Other reactive arthropathies

Also searched as

M02 8
M028

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