G96.819 ICD-10-CM Code: Other intracranial hypotension
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)
G96.819
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther intracranial hypotension
Low pressure in the fluid surrounding the brain and spinal cord due to causes other than spontaneous onset.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for G96.819 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for G96.819 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G96.819 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G96.819 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G96.819 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G96.819 in this effective period.
Code Also
Official- any associated diagnoses, such as:
- Brachial amyotrophy (G54.5)
- Cerebrospinal fluid leak from spine (G96.02)
- Cranial nerve disorders in diseases classified elsewhere (G53)
- Nerve root and compressions in diseases classified elsewhere (G55)
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is G96.819 an HCC code?
No. G96.819 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- G96.819
- Description
- Other intracranial hypotension
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
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
G96.819 is the ICD-10-CM diagnosis code for other intracranial hypotension. Low pressure in the fluid surrounding the brain and spinal cord due to causes other than spontaneous onset. G96.819 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).
G96.819 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.
Use this code when intracranial hypotension has a documented cause that is not spontaneous.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G96.819 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code when intracranial hypotension has a documented cause that is not spontaneous
- •Ensure the underlying cause is documented in the medical record