H47.9 ICD-10-CM Code: Unspecified disorder of visual pathways
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 eye and adnexa (H00-H59) / Disorders of optic nerve and visual pathways (H46-H47)
H47.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified disorder of visual pathways
This code describes a problem with the nerves and structures that carry visual information from the eye to the brain, but the specific type of disorder has not been identified or documented. It's used when a vision pathway problem is diagnosed but the exact nature isn't specified.
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 H47.9 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H47.9 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H47.9 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H47.9 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H47.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H47.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H47.9 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 H47.9 an HCC code?
No. H47.9 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- H47.9
- Description
- Unspecified disorder of visual pathways
- 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
H47.9 is the ICD-10-CM diagnosis code for unspecified disorder of visual pathways. This code describes a problem with the nerves and structures that carry visual information from the eye to the brain, but the specific type of disorder has not been identified or documented. It's used when a vision pathway problem is diagnosed but the exact nature isn't specified. H47.9 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of optic nerve and visual pathways (h46-h47).
H47.9 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 only when the documentation does not specify the type of visual pathway disorder; always attempt to obtain more specific diagnosis information from the provider before coding.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H47.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the documentation does not specify the type of visual pathway disorder; always attempt to obtain more specific diagnosis information from the provider before coding
- •Review the medical record for any mention of optic nerve, optic chiasm, optic tract, or visual cortex involvement, as these would allow for more specific H47 subcategories

