Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48) ICD-10-CM
The D37–D48 section covers neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes with 27 ICD-10-CM diagnosis codes, of which 22 are billable in fiscal year 2027. The section is organized into the 1 code ranges listed below.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- neoplasms of unspecified behavior D49
Code Ranges in This Section 1 ranges · 27 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| D3A | Benign neuroendocrine tumors (D3A) | 27 | 22 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the D37–D48 Code Range
These conditions include growths whose behavior is uncertain, polycythemia vera, and myelodysplastic syndromes. Polycythemia vera involves abnormal growth of blood-forming bone marrow cells and increased red blood cells. Myelodysplastic syndromes involve abnormal development of blood-forming cells.
Most categories group growths of uncertain behavior by body site. D37 separates mouth and digestive sites, while D38 groups the middle ear with breathing and chest organs. D39 and D40 separate female and male genital organs. D41 divides urinary organs by site. D42 through D44 distinguish the meninges, brain and central nervous system, and endocrine glands.
D45 identifies polycythemia vera. D46 divides myelodysplastic syndromes by findings such as anemia, abnormal blood cell development, and a chromosome change. D47 groups other uncertain-behavior growths of lymphoid and blood-forming tissue by type. D48 separates other and unspecified sites, including bone, skin, and breast.
Questions About This Page
How many codes are in the D37-D48 range?
The D37-D48 range contains 27 ICD-10-CM diagnosis codes in FY 2027. 22 of them are billable, and the rest are category headers that organize the section.
What conditions does D37-D48 cover?
The range covers neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
