Non-Billable / Non-Specific Code
ICD-10-CM M12 is the diagnosis code for Other and unspecified arthropathy. This code falls under the section "Inflammatory polyarthropathies" within Chapter 13 — 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 should never be coded at the same time as M12. They are mutually exclusive:
Understanding where M12 sits in the ICD-10-CM classification helps ensure proper coding:
No, M12 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
M12 is the ICD-10-CM diagnosis code for "Other and unspecified arthropathy". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
M12 is located in Section M05-M14 — "Inflammatory polyarthropathies" within Chapter 13 of the ICD-10-CM Tabular List.
M12 has 8 sub-code(s) that provide more specific detail: M12.0, M12.1, M12.2, M12.3, M12.4 and more.
Use M12 when the patients documented diagnosis matches "Other and unspecified arthropathy" 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 Other and unspecified arthropathy is M12.
No, M12 is non-billable. Use a more specific sub-code for primary diagnosis billing.
M12 is in Chapter 13 of the ICD-10-CM Tabular List.
Type 1 Excludes for M12 include: arthrosis (M15-M19); cricoarytenoid arthropathy (J38.7).
Yes, M12 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.