ICD-10-CM 2027
ICD-10 code for entrapment neuropathy
From the official ICD-10-CM alphabetic index entry “Neuropathy, neuropathic › entrapment”. Page updated September 29, 2026.
About coding entrapment neuropathy
The ICD-10-CM code for entrapment neuropathy is G58.9 (Mononeuropathy, unspecified). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on G58.9.
Within G58, choose G58.9 (Mononeuropathy, unspecified) only when documentation doesn't support a more specific option: intercostal neuropathy (G58.0), mononeuritis multiplex (G58.7) and other specified mononeuropathies (G58.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 073 (Cranial and Peripheral Nerve Disorders with MCC, relative weight 1.5779) and DRG 074 (Cranial and Peripheral Nerve Disorders without MCC, relative weight 1.0173), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific entrapment neuropathy codes (official index)
- iliohypogastric nerve G57.8 — Other specified mononeuropathies of lower limb
- ilioinguinal nerve G57.8 — Other specified mononeuropathies of lower limb
- lateral cutaneous nerve of thigh G57.1 — Meralgia paresthetica
- median nerve G56.0 — Carpal tunnel syndrome
- obturator nerve G57.8 — Other specified mononeuropathies of lower limb
- peroneal nerve G57.3 — Lesion of lateral popliteal nerve
- posterior tibial nerve G57.5 — Tarsal tunnel syndrome
- saphenous nerve G57.8 — Other specified mononeuropathies of lower limb
- ulnar nerve G56.2 — Lesion of ulnar nerve
Common questions about entrapment neuropathy ICD-10 codes
What is the ICD-10 code for entrapment neuropathy?
- G58.9 — Mononeuropathy, unspecified. More specific codes apply when the documentation supports them: G57.8, G57.8, G57.1, G56.0 and others below.
What is the ICD-10 code for iliohypogastric nerve entrapment neuropathy?
- G57.8 — Other specified mononeuropathies of lower limb (header code; choose a more specific subcode).
What is the ICD-10 code for ilioinguinal nerve entrapment neuropathy?
- G57.8 — Other specified mononeuropathies of lower limb (header code; choose a more specific subcode).
What is the ICD-10 code for median nerve entrapment neuropathy?
- G56.0 — Carpal tunnel syndrome (header code; choose a more specific subcode).
What is the ICD-10 code for obturator nerve entrapment neuropathy?
- G57.8 — Other specified mononeuropathies of lower limb (header code; choose a more specific subcode).
What is the ICD-10 code for peroneal nerve entrapment neuropathy?
- G57.3 — Lesion of lateral popliteal nerve (header code; choose a more specific subcode).
What is the ICD-10 code for posterior tibial nerve entrapment neuropathy?
- G57.5 — Tarsal tunnel syndrome (header code; choose a more specific subcode).
Is G58.9 billable?
- Yes. G58.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G58.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G58.9 as a principal diagnosis.
Is G58.9 a CC or MCC?
- No. G58.9 is neither a CC nor an MCC under MS-DRG v44.0.