ICD-10-CM 2027
ICD-10 code for nerve compression
From the official ICD-10-CM alphabetic index entry “Compression › nerve”. Page updated September 29, 2026.
About coding nerve compression
The ICD-10-CM code for nerve compression is G58.9 (Mononeuropathy, unspecified). The official index lists 4 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 nerve compression codes (official index)
- arm NEC
- axillary G54.0 — Brachial plexus disorders
- cranial
- leg NEC
- median (in carpal tunnel)
- optic
- plantar
- posterior tibial (in tarsal tunnel)
- root or plexus NOS (in) G54.9 — Nerve root and plexus disorder, unspecified
- intervertebral disc disorder NEC
- with myelopathy
- neoplastic disease D49.9 — Neoplasm of unspecified behavior of unspecified site
- spondylosis
- sciatic (acute)
- sympathetic G90.89 — Other disorders of autonomic nervous system
- traumatic
- ulnar
- upper extremity NEC
Common questions about nerve compression ICD-10 codes
What is the ICD-10 code for nerve compression?
- G58.9 — Mononeuropathy, unspecified. More specific codes apply when the documentation supports them: G54.0, G54.9, D49.9, G90.89.
What is the ICD-10 code for axillary nerve compression?
- G54.0 — Brachial plexus disorders.
What is the ICD-10 code for root or plexus nos nerve compression?
- G54.9 — Nerve root and plexus disorder, unspecified.
What is the ICD-10 code for sympathetic nerve compression?
- G90.89 — Other disorders of autonomic nervous system.
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.