G57.90
Billable codeUnspecified mononeuropathy of unspecified lower limb
The ICD-10 code for unspecified mononeuropathy of unspecified lower limb is G57.90.
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
- G57.91Unspecified mononeuropathy of right lower limb
- G57.92Unspecified mononeuropathy of left lower limb
- G57.93Unspecified mononeuropathy of bilateral lower limbs
- G57.90Unspecified mononeuropathy of unspecified lower limb
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 3558Approximate match
Associated MS-DRGs
G57.90 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.