M23.609
Billable codeOther spontaneous disruption of unspecified ligament of unspecified knee
The ICD-10 code for other spontaneous disruption of unspecified ligament of unspecified knee is M23.609.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M23.601Other spontaneous disruption of unspecified ligament of right knee
- M23.602Other spontaneous disruption of unspecified ligament of left knee
- M23.609Other spontaneous disruption of unspecified ligament of unspecified knee
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 71789Approximate match
Associated MS-DRGs
M23.609 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.