DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

G63 diagnosis code · Billable category · FY2027

G63 Polyneuropathy in diseases classified elsewhere

  • Billable
  • Not CC/MCC
  • POA reported

G63 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G60-G65 Polyneuropathies and other disorders of the peripheral nervous system (G60-G65)
  3. G63 Polyneuropathy in diseases classified elsewhere
CC / MCC
Neither
MS-DRG
073-074
HCC V28
–
POA
Reported
Code Editor
Manifestation
Index entries
35

Instructions

At G63

Excludes1

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

Code first

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

Notes that also apply

Block G60-G65 instructions (Excludes1 4): printed on the block page.

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Neuropathy, neuropathicvitamin B12 → E53.8 [G63]
  • Polyneuritis, polyneuriticdue to lack of vitamin NEC → E56.9 [G63]
  • Polyneuritis, polyneuriticnutritional → E63.9 [G63]
  • Polyneuropathy (peripheral)nutritional NEC → E63.9 [G63]
  • Polyneuropathy (peripheral)amyloid (Portuguese) → E85.1 [G63]
  • Neuritis (rheumatoid)amyloid, any site → E85.4 [G63]
  • Neuritis (rheumatoid)gouty → M10.9 [G63]
  • Neuropathy, neuropathicuremic → N18.9 [G63]
  • Polyneuropathy (peripheral)in (due to)leprosy → A30.9 [G63]
  • Polyneuropathy (peripheral)in (due to)parasitic disease NEC → B89 [G63]
  • Polyneuropathy (peripheral)in (due to)neoplastic disease → D49.9 [G63]
  • Neuropathy, neuropathicvitamin B12with anemia (pernicious) → D51.0 [G63]
  • Polyneuropathy (peripheral)in (due to)hypoglycemia → E16.2 [G63]
  • Polyneuropathy (peripheral)in (due to)endocrine disease NEC → E34.9 [G63]
  • Pellagra (alcoholic)withpolyneuropathy → E52 [G63]
  • Polyneuropathy (peripheral)in (due to)pellagra → E52 [G63]
  • Polyneuropathy (peripheral)in (due to)vitamin B12 deficiency → E53.8 [G63]
  • Polyneuropathy (peripheral)in (due to)avitaminosis NEC → E56.9 [G63]
  • Polyneuropathy (peripheral)in (due to)lack of vitamin NEC → E56.9 [G63]
  • Polyneuropathy (peripheral)in (due to)nutritional deficiency NEC → E63.9 [G63]
  • Polyneuropathy (peripheral)in (due to)porphyria → E80.20 [G63]
  • Polyneuropathy (peripheral)amyloid (Portuguese)transthyretin-related (ATTR) familial → E85.1 [G63]
  • Polyneuropathy (peripheral)in (due to)amyloidosis, familial (Portuguese) → E85.1 [G63]
  • Polyneuropathy (peripheral)in (due to)metabolic disease NEC → E88.9 [G63]
  • Polyneuropathy (peripheral)in (due to)microscopic polyangiitis → M31.7 [G63]
  • Polyneuropathy (peripheral)in (due to)collagen vascular disease NEC → M35.9 [G63]
  • Polyneuropathy (peripheral)in (due to)uremia → N18.9 [G63]
  • Uremia, uremicwithpolyneuropathy → N18.9 [G63]
  • Polyneuropathy (peripheral)in (due to)infectiousdisease NEC → B99 [G63]
  • Polyneuropathy (peripheral)in (due to)vitamin B12 deficiencywith anemia (pernicious) → D51.0 [G63]
  • Neuropathy, neuropathicvitamin B12with anemia (pernicious)due to dietary deficiency → D51.3 [G63]
  • Polyneuropathy (peripheral)in (due to)deficiency (of)vitamin B6 → E53.1 [G63]
  • Polyneuropathy (peripheral)in (due to)deficiency (of)B (-complex) vitamins → E53.9 [G63]
  • Polyneuropathy (peripheral)in (due to)systemicconnective tissue disorder → M35.9 [G63]
  • Polyneuropathy (peripheral)in (due to)vitamin B12 deficiencywith anemia (pernicious)due to dietary deficiency → D51.3 [G63]

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for G63
CC / MCCNeither
Appendix BMDC 01 Diseases and Disorders of the Nervous System, MS-DRG 073-074 (Cranial and Peripheral Nerve Disorders with MCC…)
Code EditorManifestation code: not allowed as principal diagnosis
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy