C91.40
Billable codeHairy cell leukemia not having achieved remission
The ICD-10 code for hairy cell leukemia not having achieved remission is C91.40.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Hairy cell leukemia with failed remission
- Hairy cell leukemia NOS
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- C91.41Hairy cell leukemia, in remission
- C91.42Hairy cell leukemia, in relapse
- C91.40Hairy cell leukemia not having achieved remission
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 20240Approximate match
- 20241Approximate match
- 20242Approximate match
- 20243Approximate match
- 20244Approximate match
- 20245Approximate match
- 20246Approximate match
- 20247Approximate match
- 20248Approximate match
Associated MS-DRGs
C91.40 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC
- DRG 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC
- DRG 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC
- DRG 814Reticuloendothelial and Immunity Disorders with MCC
- DRG 815Reticuloendothelial and Immunity Disorders with CC
- DRG 816Reticuloendothelial and Immunity Disorders without CC/MCC
- DRG 820Lymphoma and Leukemia with Major O.R. Procedures with MCC
- DRG 821Lymphoma and Leukemia with Major O.R. Procedures with CC
- DRG 822Lymphoma and Leukemia with Major O.R. Procedures without CC/MCC
- DRG 823Lymphoma and Non-Acute Leukemia with Other Procedures with MCC
- DRG 824Lymphoma and Non-Acute Leukemia with Other Procedures with CC
- DRG 825Lymphoma and Non-Acute Leukemia with Other Procedures without CC/MCC
- DRG 840Lymphoma and Non-Acute Leukemia with MCC
- DRG 841Lymphoma and Non-Acute Leukemia with CC
- DRG 842Lymphoma and Non-Acute Leukemia without CC/MCC