ICD-10-CM Diagnosis Code (2025)
Official Description for C91.40
Hairy cell leukemia not having achieved remission
Coding Notes & Guidelines for C91.40
Inclusion Terms
- Hairy cell leukemia with failed remission
- Hairy cell leukemia NOS
Parent Code (Less Specific):
About ICD-10-CM Code C91.40 (Hairy cell leukemia not having achieved remission)
ICD-10-CM code C91.40 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 C91.40 became effective on October 1, 2024.
This page provides detailed information about C91.40 - Hairy cell leukemia not having achieved remission. 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 Hairy cell leukemia not having achieved remission.