2027 ICD-10-CM Diagnosis Code M36Systemic disorders of connective tissue in diseases classified elsewhere

ICD-10-CM Codes›M00–M99›M30-M36›M36

ICD-10-CM M36
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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

ICD-10-CM Code
M36
Billable Status
No — Non-Billable Category
Code Describes
Systemic disorders of connective tissue in diseases classified elsewhere
Short Description
Systemic disorders of conn tiss in diseases classd elswhr
Chapter
M30-M36
Systemic connective tissue disorders

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM30-M36Systemic connective tissue disorders
CategoryM36Systemic disorders of connective tissue in diseases classified elsewhere
This CodeM36Systemic disorders of connective tissue in diseases classified elsewhere

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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M36: its own notes plus those printed at block M30-M36 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block M30-M36 Systemic connective tissue disorders applies to 84 codes
  • autoimmune disease NOS
  • collagen (vascular) disease NOS
  • systemic autoimmune disease
  • systemic collagen (vascular) disease

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block M30-M36 Systemic connective tissue disorders applies to 84 codes
  • autoimmune disease, single organ or single cell-type -code to relevant condition category

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On M36 itself
  • arthropathies in diseases classified elsewhere (M14.-)
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name M36, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming M36: they are not reported together with it, unless the two conditions are unrelated.

  • L94 Other localized connective tissue disorders
    systemic connective tissue disorders (M30-M36) names M30-M36, which includes this code

Excludes2 4

These codes carry an Excludes2 note naming M36: its condition is not part of those codes, and both may be reported when the patient has both.

  • Chapter 9 (I00-I99) Diseases of the circulatory system
    systemic connective tissue disorders (M30-M36) names M30-M36, which includes this code
  • I77 Other disorders of arteries and arterioles
    collagen (vascular) diseases (M30-M36) names M30-M36, which includes this code
  • J82 Pulmonary eosinophilia, not elsewhere classified
    pulmonary eosinophilia due to systemic connective tissue disorders (M30-M36) names M30-M36, which includes this code
  • Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue
    systemic connective tissue disorders (M30-M36) names M30-M36, which includes this code

Code First 1

These codes say to code first a condition named in the note, and M36 is one of the conditions named.

  • J84.170 Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere
    systemic connective tissue disorders (M30-M36) names M30-M36, which includes this code

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

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

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.