ICD-10-CM › C00-D49 › C81-C96 › C96 Other and unspecified malignant... › C96.6
Unifocal Langerhans-cell histiocytosis
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2010 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.
- FY2010 Added to the draft code set draft Unifocal Langerhans-cell histiocytosis
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 C96 Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
Excludes1 - never coded here
- personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)
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.
- Histiocytosis > X NEC
- Granuloma > bone > lung
- Granuloma > eosinophilic
- Granuloma > bone > eosinophilic
- Granuloma > eosinophilic > bone
- Granuloma > eosinophilic > lung
- Granuloma > lung > eosinophilic
- Histiocytosis > X NEC > chronic
- Histiocytosis > X NEC > unifocal
- Histiocytosis > Langerhans' cell NEC
- Histiocytosis > Langerhans' cell NEC > unifocal
- Histiocytosis > mononuclear phagocytes NEC > Langerhans' cells
Codes in the same group
| Code | Description | Status |
|---|---|---|
| C96.0 | Multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis | Valid |
| C96.2 | Malignant mast cell neoplasm | Not billable |
| C96.4 | Sarcoma of dendritic cells (accessory cells) | Valid |
| C96.5 | Multifocal and unisystemic Langerhans-cell histiocytosis | Valid |
| C96.9 | Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified | Valid |
| C96.A | Histiocytic sarcoma | Valid |
| C96.Z | Other specified malignant neoplasms of lymphoid, hematopoietic and related tissue | Valid |