M35.9 Systemic involvement of connective tissue, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

Applies from M35 Other systemic involvement of connective tissue

Excludes1 (never code together)

Risk adjustment (HCC)

MS-DRG index

Defines the logic of DRG(s) 545-547 in MDC 08.

Approximate ICD-9-CM (GEMs)

Code annotations containing back-references to M35.9

Back-references to M35.9

Back-references to M35

Diagnosis Index entries for M35.9

Nearby codes