2026 ICD-10-CM Diagnosis Code M36Systemic disorders of connective tissue in diseases classified elsewhere
M36 is a non-billable ICD-10-CM category code for systemic disorders of connective tissue in diseases classified elsewhere, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M36.0, M36.1, M36.2, and M36.3.
Code Identity
Code Classification
Specific Coding for Systemic disorders of conn tiss in diseases classd elswhrOverview
Non-specific codes like M36 require more characters. Use one of these billable codes instead:
Use M36.0 for Dermato(poly)myositis in neoplastic disease
Use M36.1 for Arthropathy in neoplastic disease
Use M36.2 for Hemophilic arthropathy
Use M36.3 for Arthropathy in other blood disorders
Use M36.4 for Arthropathy in hypersensitivity reactions classified elsewhere
Use M36.8 for Systemic disorders of connective tissue in other diseases classified elsewhere
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 2 Excludes
- arthropathies in diseases classified elsewhere M14
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Patient EducationClinical
Connective Tissue Disorders
Your connective tissue supports many different parts of your body, such as your skin, eyes, and heart. It is like a "cellular glue" that gives your body parts their shape and helps keep them strong. It also helps some of your tissues do their work. It is made of many kinds of proteins. Cartilage and fat are types of connective tissue.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About M36Overview
Is M36 a billable code?
No. This is a category header that groups the codes for systemic disorders of connective tissue in diseases classified elsewhere, and headers cannot be submitted on claims. Claims for systemic disorders of connective tissue in diseases classified elsewhere need a more specific code from this category, such as M36.0, M36.1, and M36.2.
