M13.80
Billable codeOther specified arthritis, unspecified site
The ICD-10 code for other specified arthritis, unspecified site is M13.80.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M13.81Other specified arthritis, shouldernon-billable header
- M13.82Other specified arthritis, elbownon-billable header
- M13.83Other specified arthritis, wristnon-billable header
- M13.84Other specified arthritis, handnon-billable header
- M13.85Other specified arthritis, hipnon-billable header
- M13.86Other specified arthritis, kneenon-billable header
- M13.87Other specified arthritis, ankle and footnon-billable header
- M13.88Other specified arthritis, other site
- M13.89Other specified arthritis, multiple sites
- M13.80Other specified arthritis, unspecified site
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 71620Approximate match
- 71630Approximate match
Associated MS-DRGs
M13.80 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.