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ICD-10-CM 2027 diagnosis code

G93.6Cerebral edema

✓ Billable / specificMCC — major complication/comorbidity

G93.6 is a valid, billable ICD-10-CM code for cerebral edema. 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 Brain edema.

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 G93.6

G93.6 is the ICD-10-CM diagnosis code for cerebral edema. 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 (other disorders of brain), G93.6 is specifically for cerebral edema. Related codes cover cerebral cysts (G93.0), Anoxic brain damage, not elsewhere classified (G93.1), benign intracranial hypertension (G93.2), Postviral and related fatigue syndromes (G93.3), other and unspecified encephalopathy (G93.4), compression of brain (G93.5), Reye's syndrome (G93.7), other specified disorders of brain (G93.8) and 1 more.

Don't report G93.6 together with the conditions in its Excludes1 note: cerebral edema due to birth injury (P11.0) and traumatic cerebral edema (S06.1-).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 080 (Nontraumatic Stupor and Coma with MCC, relative weight 1.7472) and DRG 081 (Nontraumatic Stupor and Coma without MCC, relative weight 0.806), 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 348.5 (cerebral edema).

Coding notes

Excludes1Not coded here — never report together with this code
  • cerebral edema due to birth injury (P11.0)
  • traumatic cerebral edema (S06.1-)

Notes that apply from higher levels

Instructions written at a parent level also apply to G93.6.

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

Alphabetic index entries

7 entries

Terms in the official ICD-10-CM index that lead to G93.6.

Codes whose notes reference G93.6

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 →
  • 348.5Cerebral edemaapproximate

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 G93.6

Is G93.6 billable?

Yes. G93.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G93.6 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G93.6 as a principal diagnosis.

Is G93.6 a CC or MCC?

G93.6 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does G93.6 group to?

G93.6 is used in the MS-DRG v44.0 logic for MS-DRG 080 (Nontraumatic Stupor and Coma with MCC) and MS-DRG 081 (Nontraumatic Stupor and Coma without 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 G93.6?

The CMS General Equivalence Mappings map G93.6 to ICD-9-CM 348.5.