All ICD10 Codes

G89-G99

Non-Billable
ChapterG00–G99
Rankblock
Official Description

Other disorders of the nervous system (G89-G99)

Use a more specific code (1 billable, 10 non-billable)
G89Pain, not elsewhere classifiedhas subcodesG90Disorders of autonomic nervous systemhas subcodesG91Hydrocephalushas subcodesG92Toxic encephalopathyhas subcodesG93Other disorders of brainhas subcodesG94Other disorders of brain in diseases classified elsewhereG95Other and unspecified diseases of spinal cordhas subcodesG96Other disorders of central nervous systemhas subcodesG97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classifiedhas subcodesG98Other disorders of nervous system not elsewhere classifiedhas subcodesG99Other disorders of nervous system in diseases classified elsewherehas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 6: Diseases of the Nervous System (G00-G99).

CH6 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

Clinical Hierarchy

BillableHas subcodes
CH6Diseases of the nervous system (G00-G99)
G89-G99Other disorders of the nervous system (G89-G99)Not billable
G89Pain, not elsewhere classifiedSubcodes
G90Disorders of autonomic nervous systemSubcodes
G91HydrocephalusSubcodes
G92Toxic encephalopathySubcodes
G93Other disorders of brainSubcodes
G94Other disorders of brain in diseases classified elsewhereBillable
G95Other and unspecified diseases of spinal cordSubcodes
G96Other disorders of central nervous systemSubcodes
G97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classifiedSubcodes
G98Other disorders of nervous system not elsewhere classifiedSubcodes
G99Other disorders of nervous system in diseases classified elsewhereSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to G89-G99:

chapterCH6
Diseases of the nervous system (G00-G99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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