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G57 ICD-10-CA category: Mononeuropathies of lower limb

G57 isn’t a code on its own. Choose one of the 9 codes beneath it, the one the documentation supports.

Official description

G57

Mononeuropathies of lower limb

ICD-10-CA · Canada

Codes in G57

G57 isn’t a code on its own. Open the code that matches what the note documents.

G57.0Lesion of sciatic nerveG57.1Meralgia paraestheticaG57.2Lesion of femoral nerveG57.3Lesion of lateral popliteal nerveG57.4Lesion of medial popliteal nerveG57.5Tarsal tunnel syndromeG57.6Lesion of plantar nerveG57.8Other mononeuropathies of lower limbG57.9Mononeuropathy of lower limb, unspecified

Notes for G57

As CIHI prints them, with any note G57 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Current traumatic nerve disorder - see nerve injury by body region
  • Current traumatic nerve, nerve root and plexus disorders - see nerve injury by body regionneuralgia NOS (M79.2)neuritis NOS (M79.2)peripheral neuritis in pregnancy (O26.8)radiculitis NOS (M54.1)From G50-G59 Nerve, nerve root and plexus disorders
  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 6: Diseases of the nervous system (G00-G99)

Where G57 sits

  1. 1ChapterChapter 6: Diseases of the nervous system (G00-G99)
  2. 2Block G50-G59Nerve, nerve root and plexus disorders
  3. 3Category G57Mononeuropathies of lower limb

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See G57 in the CIHI source

Frequently asked questions

Is G57 a valid ICD-10-CA code?

No. G57 (Mononeuropathies of lower limb) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 9 codes; record the one the documentation supports.

Where is G57 in ICD-10-CA?

G57 sits under G50-G59 Nerve, nerve root and plexus disorders, within Chapter 6: Diseases of the nervous system (G00-G99).

What coding notes apply to G57?

ICD-10-CA lists Excludes notes for G57, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside G57

G50Disorders of trigeminal nerveG51Facial nerve disordersG52Disorders of other cranial nervesG53Cranial nerve disorders in diseases classified elsewhereG54Nerve root and plexus disordersG55Nerve root and plexus compressions in diseases classified elsewhereG56Mononeuropathies of upper limbG58Other mononeuropathiesG59Mononeuropathy in diseases classified elsewhere