M35

Non-billable

Other systemic involvement of connective tissue

M35 is the ICD-10-CM code for Other systemic involvement of connective tissue. It is a non-billable category code — use a more specific child code such as M35.0 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Subcodes
10
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes1 — not coded here

  • reactive perforating collagenosis (L87.1)

Frequently asked questions

What is ICD-10 code M35?
M35 is the ICD-10-CM code for "Other systemic involvement of connective tissue". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M35 a billable code?
No — M35 is a non-billable header code. Use a more specific child code (such as M35.0) for billing.
What are the subcodes of M35?
M35 has 10 more specific child codes, including M35.0, M35.1, M35.2.
What is excluded from M35?
Excludes1 (not coded here): reactive perforating collagenosis (L87.1).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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