Get started free

C91.6

Non-billable

Prolymphocytic leukemia of T-cell type

C91.6 is the ICD-10-CM code for Prolymphocytic leukemia of T-cell type. It is a non-billable category code — use a more specific child code such as C91.60 for billing.

Status
Header (non-billable)
Chapter
C00-D49
Parent
C91
Subcodes
3
Edition
FY2026

C00-D49 Neoplasms

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code C91.6?
C91.6 is the ICD-10-CM code for "Prolymphocytic leukemia of T-cell type". It falls under C00-D49 Neoplasms.
Is C91.6 a billable code?
No — C91.6 is a non-billable header code. Use a more specific child code (such as C91.60) for billing.
What are the subcodes of C91.6?
C91.6 has 3 more specific child codes, including C91.60, C91.61, C91.62.

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.

Get started freeSee how Eleplan works →