H40.843 ICD-10-CM Code: Neovascular secondary angle closure glaucoma, bilateral
H40.843 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · free HCC coding tools
HCC Buddy Code Card
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Glaucoma (H40-H42)
H40.843
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceNeovascular secondary angle closure glaucoma, bilateral
A type of glaucoma affecting both eyes caused by abnormal blood vessel growth that blocks fluid drainage and increases eye pressure in both eyes.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
MappedHCC 243
Code-level coefficient reference
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for H40.843 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H40.843 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H40.843 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H40.843 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H40.843 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H40.843 in this effective period.
Code Also
Official- the underlying condition such as:
- central retinal vein occlusion (H34.81)
- diabetes mellitus (E08.39, E09.39, E10.39, E11.39, E13.39)
- retinal ischemia (H35.82)
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 H40.843 an HCC code?
H40.843 is not in the CMS-HCC V28 or V24 community payment model. H40.843 has a separate mapping under the Part D RxHCC model (HCC 243 (Glaucoma, Open-Angle or Moderate/Severe Stage)); the applicable result needs member context.
- Code
- H40.843
- Description
- Neovascular secondary angle closure glaucoma, bilateral
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.
Work H40.843 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT Criteria for H40.843
For H40.843 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed H40.843 during that encounter, not just copy-forwarded from a problem list.
Coder workflow notes
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What This Code Means
H40.843 is the ICD-10-CM diagnosis code for neovascular secondary angle closure glaucoma, bilateral. A type of glaucoma affecting both eyes caused by abnormal blood vessel growth that blocks fluid drainage and increases eye pressure in both eyes. H40.843 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering glaucoma (h40-h42).
H40.843 has no mapping under the CMS-HCC V28 or V24 community payment models. H40.843 has a separate mapping under the Part D RxHCC model (HCC 243 (Glaucoma, Open-Angle or Moderate/Severe Stage)); the applicable result needs member context. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.
Confirm bilateral involvement is documented; if only one eye is affected, use H40.841 or H40.842.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for H40.843 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.