G93.49 ICD-10-CM Code: Other encephalopathy
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
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 guidanceOther 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
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
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
Includes
OfficialICD-10-CM does not list Includes notes for G93.49 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G93.49 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G93.49 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G93.49 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G93.49 in this effective period.
Buddy Documentation Tip
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