Is M35.8 a billable code?
No. M35.8 is a header code that groups 2 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
M35.8: Other specified systemic involvement of connective tissue
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
M35.8 groups related diagnoses under other specified systemic involvement of connective tissue. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under M35.8
- M35.81Multisystem inflammatory syndrome
- M35.89Other specified systemic involvement of connective tissue
Other codes in M35 Other systemic involvement of connective tissue
- M35.0Sjogren syndromeheader
- M35.1Other overlap syndromes
- M35.2Behcet's disease
- M35.3Polymyalgia rheumatica
- M35.4Diffuse (eosinophilic) fasciitis
- M35.5Multifocal fibrosclerosis
- M35.6Relapsing panniculitis [Weber-Christian]
- M35.7Hypermobility syndrome
- M35.9Systemic involvement of connective tissue, unspecified
M35.8 questions
What does M35.8 mean?
M35.8 is the ICD-10-CM code for Other specified systemic involvement of connective tissue. It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.