ICD-10-CM › C00-D49 › C81-C96 › C91 Lymphoid leukemia › C91.9
Lymphoid leukemia, unspecified
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
What has happened to this code
Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2012 Added to the draft code set draft Lymphoid leukemia, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from C91 Lymphoid leukemia
Excludes1 - never coded here
- personal history of leukemia (Z85.6)
Inherited from the C81-C96 section Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
Excludes2 - not included here
- Kaposi's sarcoma of lymph nodes (C46.3)
- secondary and unspecified neoplasm of lymph nodes (C77.-)
- secondary neoplasm of bone marrow (C79.52)
- secondary neoplasm of spleen (C78.89)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Cancer > blood
- Infiltrate, infiltration > leukemic
- Infiltrate, infiltration > lymphatic
- Leukemia, leukemic > lymphoid
- Infiltrate, infiltration > lymphatic
- Leukemia, leukemic > subacute lymphocytic
Codes in the same group
| Code | Description | Status |
|---|---|---|
| C91.0 | Acute lymphoblastic leukemia [ALL] | Not billable |
| C91.1 | Chronic lymphocytic leukemia of B-cell type | Not billable |
| C91.3 | Prolymphocytic leukemia of B-cell type | Not billable |
| C91.4 | Hairy cell leukemia | Not billable |
| C91.5 | Adult T-cell lymphoma/leukemia (HTLV-1-associated) | Not billable |
| C91.6 | Prolymphocytic leukemia of T-cell type | Not billable |
| C91.A | Mature B-cell leukemia Burkitt-type | Not billable |
| C91.Z | Other lymphoid leukemia | Not billable |