G57.9
Non-billableUnspecified mononeuropathy of lower limb
G57.9 is the ICD-10-CM code for Unspecified mononeuropathy of lower limb. It is a non-billable category code — use a more specific child code such as G57.90 for billing.
G00-G99 Diseases of the nervous system
What this means — in plain language
MedlinePlus · NIHWhat are peripheral nerves? Nerves are like wires that carry messages back and forth between your brain and your body. Your peripheral nerves branch off from your brain and spinal cord and connect to all parts of your body, including your muscles and organs. Peripheral nerves carry messages from your brain that control your movement, breathing, heartbeat, digestion, and more. They also carry messages from your body…
Read more about Peripheral Nerve Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Medications indicated for this condition
FDA labelingDrugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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