Mature T/NK-cell lymphomas, unspecified, lymph nodes of head, face, and neck
- C84.91 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- Short description: Mature T/NK-cell lymph, unsp, nodes of head, face, and neck
- The 2025 edition of ICD-10-CM C84.91 became effective on October 1, 2024.
- This is the American ICD-10-CM version of C84.91 – other international versions of ICD-10 C84.91 may differ.
The following code(s) above C84.91 contain annotation back-references
that may be applicable to C84.91:
- C00-D49 Neoplasms
- C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
- C84 Mature T/NK-cell lymphomas
- C84.9 Mature T/NK-cell lymphomas, unspecified
Approximate Synonyms
- Lymphoma, mature t/nk-cell, head ln
- Mature natural killer and/or t-cell lymphoma of lymph nodes of head
- Mature natural killer and/or t-cell lymphoma of lymph nodes of neck
- Mature nk/t-cell lymphoma, head ln
- Mature nk/t-cell lymphoma, neck ln
- Mature t-cell and/or nk-cell lymphoma of lymph nodes of head
ICD-10-CM C84.91 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):
- 011 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with mcc
- 012 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with cc
- 013 Tracheostomy for face, mouth and neck diagnoses or laryngectomy without cc/mcc
- 820 Lymphoma and leukemia with major o.r. Procedures with mcc
- 821 Lymphoma and leukemia with major o.r. Procedures with cc
- 822 Lymphoma and leukemia with major o.r. Procedures without cc/mcc
- 823 Lymphoma and non-acute leukemia with other procedures with mcc
- 824 Lymphoma and non-acute leukemia with other procedures with cc
- 825 Lymphoma and non-acute leukemia with other procedures without cc/mcc
- 840 Lymphoma and non-acute leukemia with mcc
- 841 Lymphoma and non-acute leukemia with cc
- 842 Lymphoma and non-acute leukemia without cc/mcc
- 974 Hiv with major related condition with mcc
- 975 Hiv with major related condition with cc
- 976 Hiv with major related condition without cc/mcc
Convert C84.91 to ICD-9-CMCode History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- 2024 (effective 10/1/2023): No change
- 2025 (effective 10/1/2024): No change