Reserved for future guideline expansion
D56.9
BookmarkThalassemia, unspecified
Filed alongside this entry 18
under Disease, diseased → hemoglobin or Hb
- abnormal (mixed) NEC D58.2
- AS genotype D57.3
- Bart's D56.0
- C (Hb-C) D58.2
- Constant Spring D58.2
- D (Hb-D) D58.2
- E (Hb-E) D58.2
- E-beta thalassemia D56.5
- elliptocytosis D58.1
- H (Hb-H) (thalassemia) D56.0
- I thalassemia D56.9
- M D74.0
- S or SS D57.1
- SC D57.2
- SD D57.8
- SE D57.8
- spherocytosis D58.0
- unstable, hemolytic D58.2
Index entries, exactly as the book files them. This says they are listed together — not that any of them is documented in your chart.
Billable FY2027 2026-10-01 → 2027-09-30
This is the unspecified option. 7 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
How to use this page
Everything the published sources say about one code, on one page.
- Read the Excludes1 block first — it is the one that stops you coding this at all alongside another code.
- Excludes2, Code first, Use additional and Includes follow. A note inherited from a parent category is labelled with the category it came from, so you can see why it applies.
- Official Guidelines sit below. "Guidelines naming this code" cite the code or a range containing it; "Chapter guidance" is the general guidance for its chapter and is the weaker signal.
- Guideline text is quoted verbatim with its section number and page, so you can check it against the published document.
- Risk-model chips show which published CMS models map this code.
What this page does not do
- Guidance is quoted, never paraphrased — a paraphrase of a coding rule is a different rule.
- Medication candidates, where shown, are matched by condition *name* and are offered as candidates for you to judge. They are not "the drugs for this code".
Exclusions10never code together
D50-D89chapter
Excludes2
- autoimmune disease (systemic) NOS (M35.9)M35.9
- certain conditions originating in the perinatal period (P00-P96)P00-P96
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- human immunodeficiency virus [HIV] disease (B20)B20
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes1
D56.9code
Inclusion terms
- Mediterranean anemia (with other hemoglobinopathy)
Official Guidelines1names this code
ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.
Index entries leading here6
- Disease, diseased — see also Syndrome
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) D64.9
- Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
- in (due to)
- thalassemia NEC D56.9
- in (due to)
- Leptocytosis, hereditary D56.9
- Rietti-Greppi-Micheli anemia D56.9
- Thalassemia (anemia) (disease) D56.9
Alongside this code7same parent — D56
Medications1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.