Non-Billable / Non-Specific Code
ICD-10-CM M36 is the diagnosis code for Systemic disorders of connective tissue in diseases classified elsewhere. This code falls under the section "Systemic connective tissue disorders" within Chapter 13 â Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in M36. If the patient has both, code each condition separately:
Understanding where M36 sits in the ICD-10-CM classification helps ensure proper coding:
No, M36 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
M36 is the ICD-10-CM diagnosis code for "Systemic disorders of connective tissue in diseases classified elsewhere". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
M36 is located in Section M30-M36 â "Systemic connective tissue disorders" within Chapter 13 of the ICD-10-CM Tabular List.
M36 has 6 sub-code(s) that provide more specific detail: M36.0, M36.1, M36.2, M36.3, M36.4 and more.
Use M36 when the patients documented diagnosis matches "Systemic disorders of connective tissue in diseases classified elsewhere" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Systemic disorders of connective tissue in diseases classified elsewhere is M36.
No, M36 is non-billable. Use a more specific sub-code for primary diagnosis billing.
M36 is in Chapter 13 of the ICD-10-CM Tabular List.
Yes, M36 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.