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ICD-10-CM 2027 diagnosis code

G93.89Other specified disorders of brain

✓ Billable / specific

G93.89 is a valid, billable ICD-10-CM code for other specified disorders of brain. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Gliosis, ICD-10 code for Automatism, ICD-10 code for Ependymopathy, ICD-10 code for Brain fistula.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G93.89

G93.89 is the ICD-10-CM diagnosis code for other specified disorders of brain. It belongs to category G93 (other disorders of brain), block G89-G99 (other disorders of the nervous system) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G93.8, choose G93.89 (Other specified disorders of brain) only when documentation doesn't support a more specific option: temporal sclerosis (G93.81) and brain death (G93.82).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 070 (Other Cerebrovascular Disorders with MCC, relative weight 1.6093), DRG 071 (Other Cerebrovascular Disorders with CC, relative weight 1.0177) and DRG 072 (Other Cerebrovascular Disorders without CC/MCC, relative weight 0.7348), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 348.89 (other conditions of brain).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Postradiation encephalopathy

Notes that apply from higher levels

Instructions written at a parent level also apply to G93.89.

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Alphabetic index entries

33 entries

Terms in the official ICD-10-CM index that lead to G93.89.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 348.89Other conditions of brainapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about G93.89

Is G93.89 billable?

Yes. G93.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G93.89 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G93.89 as a principal diagnosis.

Is G93.89 a CC or MCC?

No. G93.89 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does G93.89 group to?

G93.89 is used in the MS-DRG v44.0 logic for MS-DRG 070 (Other Cerebrovascular Disorders with MCC), MS-DRG 071 (Other Cerebrovascular Disorders with CC) and MS-DRG 072 (Other Cerebrovascular Disorders without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for G93.89?

The CMS General Equivalence Mappings map G93.89 to ICD-9-CM 348.89.