2027 ICD-10-CM Diagnosis Code G93Other disorders of brain

ICD-10-CM Codes›G00–G99›G89-G99›G93

ICD-10-CM G93
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G93 is a non-billable ICD-10-CM category code for other disorders of brain, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G93.0, G93.1, G93.2, and G93.31.

Code Identity

ICD-10-CM Code
G93
Billable Status
No — Non-Billable Category
Code Describes
Other disorders of brain
Short Description
Other disorders of brain
Same as the full description in the CMS dataset.
Chapter
G89-G99
Other disorders of the nervous system

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG93Other disorders of brain
This CodeG93Other disorders of brain

Specific Coding for Other disorders of brainOverview

Non-specific codes like G93 require more characters. Use one of these billable codes instead:

  • Use G93.0 for Cerebral cysts

  • Use G93.1 for Anoxic brain damage, not elsewhere classified

  • Use G93.2 for Benign intracranial hypertension

  • G93.3 for Postviral and related fatigue syndromes

  • Use G93.31 for Postviral fatigue syndrome

  • Use G93.32 for Myalgic encephalomyelitis/chronic fatigue syndrome

  • Use G93.39 for Other post infection and related fatigue syndromes

  • G93.4 for Other and unspecified encephalopathy

  • Use G93.40 for Encephalopathy, unspecified

  • Use G93.41 for Metabolic encephalopathy

  • Use G93.42 for Megalencephalic leukoencephalopathy with subcortical cysts

  • Use G93.43 for Leukoencephalopathy with calcifications and cysts

  • Use G93.44 for Adult-onset leukodystrophy with axonal spheroids

  • Use G93.45 for Developmental and epileptic encephalopathy

  • Use G93.49 for Other encephalopathy

  • Use G93.5 for Compression of brain

  • Use G93.6 for Cerebral edema

  • Use G93.7 for Reye's syndrome

  • G93.8 for Other specified disorders of brain

  • Use G93.81 for Temporal sclerosis

  • Use G93.82 for Brain death

  • Use G93.89 for Other specified disorders of brain

  • Use G93.9 for Disorder of brain, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G93: its own notes plus those printed at Chapter 6. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Patient EducationClinical

Brain Diseases

Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G93Overview

What is the ICD-10 code for other disorders of brain?

G93 is the ICD-10-CM category for other disorders of brain, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is G93 (Other disorders of brain) a billable code?

No. This is a category header that groups the codes for other disorders of brain, and headers cannot be submitted on claims. Claims for other disorders of brain need a more specific code from this category, such as G93.0, G93.1, and G93.2.