ICD-10-CM 2027
ICD-10 code for Chlorosis
From the official ICD-10-CM alphabetic index entry “Chlorosis”. Page updated September 29, 2026.
About coding Chlorosis
The ICD-10-CM code for Chlorosis is D50.9 (Iron deficiency anemia, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on D50.9.
Within D50, choose D50.9 (unspecified) only when documentation doesn't support a more specific option: secondary to blood loss (chronic) (D50.0), Sideropenic dysphagia (D50.1) and other iron deficiency anemias (D50.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 811 (Red Blood Cell Disorders with MCC, relative weight 1.3988) and DRG 812 (Red Blood Cell Disorders without MCC, relative weight 0.9234), in MDC 16 (Diseases and Disorders of the Blood and Blood Forming Organs and Immunological Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Chlorosis codes (official index)
Common questions about Chlorosis ICD-10 codes
What is the ICD-10 code for Chlorosis?
- D50.9 — Iron deficiency anemia, unspecified. More specific codes apply when the documentation supports them: B76.9, B76.9.
What is the ICD-10 code for egyptian chlorosis?
- B76.9 — Hookworm disease, unspecified.
What is the ICD-10 code for miner's chlorosis?
- B76.9 — Hookworm disease, unspecified.
Is D50.9 billable?
- Yes. D50.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D50.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D50.9 as a principal diagnosis.
Is D50.9 a CC or MCC?
- No. D50.9 is neither a CC nor an MCC under MS-DRG v44.0.