C91.40

Billable

Hairy cell leukemia not having achieved remission

C91.40 is the ICD-10-CM code for Hairy cell leukemia not having achieved remission. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
C00-D49
Parent
C91.4
Edition
FY2026

C00-D49 Neoplasms

Includes

  • Hairy cell leukemia with failed remission
  • Hairy cell leukemia NOS

Frequently asked questions

What is ICD-10 code C91.40?
C91.40 is the ICD-10-CM code for "Hairy cell leukemia not having achieved remission". It falls under C00-D49 Neoplasms.
Is C91.40 a billable code?
Yes — C91.40 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.