Coding and coverage · ICD-10-CM

G55 Nerve root and plexus compressions in diseases classified elsewhere

BillableNo payment HCCChapter 6
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Instructional notes

Chapter 6

Excludes2Not included here: the patient may have both; report both when both are present.
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Section G50-G59

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
  • neuralgia NOS (M79.2)
  • neuritis NOS (M79.2)
  • peripheral neuritis in pregnancy (O26.82-)
  • radiculitis NOS (M54.1-)

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • nerve root compression (due to) (in) ankylosing spondylitis (M45.-)
  • nerve root compression (due to) (in) dorsopathies (M53.-, M54.-)
  • nerve root compression (due to) (in) intervertebral disc disorders (M50.1.-, M51.1.-)
  • nerve root compression (due to) (in) spondylopathies (M46.-, M48.-)
  • nerve root compression (due to) (in) spondylosis (M47.0-, M47.2.-)
Code firstSequence the underlying condition first.
  • underlying disease, such as:
  • neoplasm (C00-D49)

Chapter 6: Diseases of the nervous system · G50-G59 Nerve, nerve root and plexus disorders (G50-G59)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.