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G93.49 ICD-10-CM Code: Other encephalopathy

ICD-10-CM Code View

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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Other disorders of the nervous system (G89-G99)

G93.49

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Other encephalopathy

This code describes inflammation or dysfunction of the brain that doesn't fit into other specific encephalopathy categories. It's used when a patient has brain swelling or brain dysfunction from various causes that aren't more precisely defined.

CMS-HCC V28

0

0

RAF 0

CMS-HCC V24

0

0

RAF 0

ACA/HHS

0

0

RAF 0

ESRD/PACE

0

0

RAF 0

RXHCC

0

0

RAF 0

Code Trumping

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Code Book Path

Official
G93Other disorders of brain
G93.4Other and unspecified encephalopathy
G93.49Other encephalopathy

Inclusion Terms

Official
  • Encephalopathy NEC

Excludes 2

Official
  • alcoholic encephalopathy (G31.2)
  • encephalopathy in diseases classified elsewhere (G94)
  • hypertensive encephalopathy (I67.4)
  • toxic (metabolic) encephalopathy (G92.8)

Related Child Codes

Official
G93.40Encephalopathy, unspecified
G93.41Metabolic encephalopathy
G93.42Megalencephalic leukoencephalopathy with subcortical cysts
G93.43Leukoencephalopathy with calcifications and cysts
G93.44Adult-onset leukodystrophy with axonal spheroids

Includes

Official

ICD-10-CM does not list Includes notes for G93.49 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for G93.49 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for G93.49 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for G93.49 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for G93.49 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Always review the clinical documentation to identify the underlying cause of encephalopathy (toxic, metabolic, anoxic, etc.) as more specific codes may be available and preferred
This is a catch-all code, so ensure no more specific G93.4x subcategory applies before assigning G93.49; check for documented etiology that might support a more specific diagnosis code

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is G93.49 an HCC code?

No. G93.49 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

G93.49 is the ICD-10-CM diagnosis code for other encephalopathy. This code describes inflammation or dysfunction of the brain that doesn't fit into other specific encephalopathy categories. It's used when a patient has brain swelling or brain dysfunction from various causes that aren't more precisely defined. G93.49 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering other disorders of the nervous system (g89-g99).

G93.49 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Always review the clinical documentation to identify the underlying cause of encephalopathy (toxic, metabolic, anoxic, etc.) as more specific codes may be available and preferred.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G93.49 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Always review the clinical documentation to identify the underlying cause of encephalopathy (toxic, metabolic, anoxic, etc.) as more specific codes may be available and preferred
  • This is a catch-all code, so ensure no more specific G93.4x subcategory applies before assigning G93.49; check for documented etiology that might support a more specific diagnosis code

Child Codes

Code Hierarchy

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