288 Diseases of white blood cells (288.00-288.9) ICD-9-CM
The 288.00-288.9 block classified 288 diseases of white blood cells with 23 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 288.00-288.9 Block 23 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 288.00 Neutropenia NOS
- 288.01 Congenital neutropenia
- 288.02 Cyclic neutropenia
- 288.03 Drug induced neutropenia
- 288.04 Neutropenia d/t infectn
- 288.09 Neutropenia NEC
- 288.1 Function dis neutrophils
- 288.2 Genetic anomaly leukocyt
- 288.3 Eosinophilia
- 288.4 Hemophagocytic syndromes
- 288.50 Leukocytopenia NOS
- 288.51 Lymphocytopenia
- 288.59 Decreased WBC count NEC
- 288.60 Leukocytosis NOS
- 288.61 Lymphocytosis-symptomatc
- 288.62 Leukemoid reaction
- 288.63 Monocytosis-symptomatic
- 288.64 Plasmacytosis
- 288.65 Basophilia
- 288.66 Bandemia
- 288.69 Elevated WBC count NEC
- 288.8 Wbc disease NEC
- 288.9 Wbc disease NOS
Questions About This Page
Are the 288.00-288.9 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 288.00-288.9 block classify?
The block classified 288 diseases of white blood cells with 23 codes in the final ICD-9-CM release. It sat under Diseases of the blood and blood-forming organs (280–289) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
