DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

G59 diagnosis code · Billable category · FY2027

G59 Mononeuropathy in diseases classified elsewhere

  • Billable
  • Not CC/MCC
  • POA reported

G59 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. G50-G59 Nerve, nerve root and plexus disorders (G50-G59)
  3. G59 Mononeuropathy in diseases classified elsewhere
CC / MCC
Neither
MS-DRG
073-074
HCC V28
–
POA
Reported
Code Editor
Manifestation
Index entries
1

Instructions

At G59

Excludes1

  • diabetic mononeuropathy (E08-E13 with .41) E08 E13
  • syphilitic nerve paralysis (A52.19) A52.19
  • syphilitic neuritis (A52.15) A52.15
  • tuberculous mononeuropathy (A17.83) A17.83

Code first

  • underlying disease

Notes that also apply

Block G50-G59 instructions (Excludes1 5): printed on the block page.

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

Index entries

  • Mononeuropathyin diseases classified elsewhere → see category G59

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

Medicare grouping and edits

CMS files for G59
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