ICD-10-CM Diagnosis Code (2025)
Official Description for C91.5
Adult T-cell lymphoma/leukemia (HTLV-1-associated)
Coding Notes & Guidelines for C91.5
Inclusion Terms
- Acute variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
- Chronic variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
- Lymphomatoid variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
- Smouldering variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
Inclusion Terms
- Adult T-cell lymphoma/leukemia (HTLV-1-associated) with failed remission
- Adult T-cell lymphoma/leukemia (HTLV-1-associated) NOS
Parent Code (Less Specific):
About ICD-10-CM Code C91.5 (Adult T-cell lymphoma/leukemia)
ICD-10-CM code C91.5 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM C91.5 became effective on October 1, 2024.
This page provides detailed information about C91.5 - Adult T-cell lymphoma/leukemia (HTLV-1-associated). It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Adult T-cell lymphoma/leukemia.