G63

Polyneuropathy in diseases classified elsewhere

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC ESRD V24

HCC75

Myasthenia Gravis/Myoneural Disorders and Guillain-Barre Syndrome/Inflammatory and Toxic Neuropathy

RxHCC V08

RXHCC158

Inflammatory and Toxic Neuropathy

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · G63

Excludes 1

polyneuropathy (in): diabetes mellitus (E08-E13 with .42) diphtheria (A36.83) infectious mononucleosis complicated by polyneuropathy (B27.0-B27.9 with fifth character 1) Lyme disease (A69.22) mumps (B26.84) postherpetic (B02.23) rheumatoid arthritis (M05.5-) scleroderma (M34.83) systemic lupus erythematosus (M32.19)

Code first

underlying disease, such as: amyloidosis (E85.-) endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34) metabolic diseases (E70-E88) neoplasm (C00-D49) nutritional deficiency (E40-E64)

Inherited from G60-G65Polyneuropathies and other disorders of the peripheral nervous system

Excludes 1

neuralgia NOS (M79.2) neuritis NOS (M79.2) peripheral neuritis in pregnancy (O26.82-) radiculitis NOS (M54.10)

Inherited from chapter 6Diseases of the nervous system

Excludes 2

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)

Official Guidelines for G63

FY 2026 ›

I.C.6Chapter-specific guidanceChapter 6: Diseases of the Nervous System (G00-G99)

Subsections