Systemic connective tissue disorders (M30-M36) ICD-10-CM
The M30–M36 section covers systemic connective tissue disorders with 101 ICD-10-CM diagnosis codes, of which 84 are billable in fiscal year 2027. The section is organized into the 7 code ranges listed below.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- autoimmune disease NOS
- collagen (vascular) disease NOS
- systemic autoimmune disease
- systemic collagen (vascular) disease
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- autoimmune disease, single organ or single cell-type -code to relevant condition category
Code Ranges in This Section 7 ranges · 101 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the M30–M36 Code Range
These conditions affect connective tissue throughout the body. They include blood vessel disorders, lupus, inflammation of muscle and skin, and systemic sclerosis.
M30 groups polyarteritis nodosa with related conditions, including lung involvement, juvenile polyarteritis, and Kawasaki syndrome. M31 groups other necrotizing vasculopathies, blood vessel disorders involving tissue death, by named condition.
M32 covers systemic lupus erythematosus, a recurring inflammatory disorder that can affect the skin, joints, kidneys, and membranes around organs. Its subdivisions distinguish drug-induced lupus from lupus with organ or system involvement and other forms. M33 separates juvenile dermatomyositis, other dermatomyositis, and polymyositis. Dermatomyositis involves muscle inflammation and a skin rash.
M34 separates forms of systemic sclerosis, including progressive and drug- or chemical-induced forms. M35 groups other systemic connective tissue conditions, including overlap syndromes. M36 groups connective tissue disorders associated with conditions such as neoplastic disease, blood disorders, and hypersensitivity reactions.
Questions About This Page
How many codes are in the M30-M36 range?
The M30-M36 range contains 101 ICD-10-CM diagnosis codes in FY 2027. 84 of them are billable, and the rest are category headers that organize the section.
What conditions does M30-M36 cover?
The range covers systemic connective tissue disorders. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
