G57
Mononeuropathies of lower limb
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 14 never code together
G57code
Excludes1
- current traumatic nerve disorder - see nerve injury by body region
G50-G59block
G00-G99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes
No further instructional notes apply.
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 10
G57.0 Lesion of sciatic nerve G57.1 Meralgia paresthetica G57.2 Lesion of femoral nerve G57.3 Lesion of lateral popliteal nerve G57.4 Lesion of medial popliteal nerve G57.5 Tarsal tunnel syndrome G57.6 Lesion of plantar nerve G57.7 Causalgia of lower limb G57.8 Other specified mononeuropathies of lower limb G57.9 Unspecified mononeuropathy of lower limb
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.