D52.9 ICD-10-CM Code: Folate deficiency anemia, unspecified
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 blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) / Nutritional anemias (D50-D53)
D52.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceFolate deficiency anemia, unspecified
Anemia caused by folate deficiency where the specific cause has not been determined or documented.
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
Official- Folic acid deficiency anemia NOS
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for D52.9 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for D52.9 in this effective period.
Excludes 1
Official- folate deficiency without anemia (E53.8)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for D52.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for D52.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for D52.9 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 D52.9 an HCC code?
No. D52.9 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
D52.9 is the ICD-10-CM diagnosis code for folate deficiency anemia, unspecified. Anemia caused by folate deficiency where the specific cause has not been determined or documented. D52.9 sits in the ICD-10-CM chapter for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (d50-d89), within the section covering nutritional anemias (d50-d53).
D52.9 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.
Query the provider to determine if the cause is dietary (D52.0), drug-induced (D52.1), or other (D52.8).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D52.9 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.