ICD-10-CM 2027 diagnosis code
C96.9Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified
C96.9 is a valid, billable ICD-10-CM code for malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Malig neoplm of lymphoid, hematpoetc and rel tissue, unsp
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About C96.9
C96.9 is the ICD-10-CM diagnosis code for malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified. It belongs to category C96 (other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue), block C81-C96 (malignant neoplasms of lymphoid, hematopoietic and related tissue) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within C96, choose C96.9 (Malignant neoplasm of lymphoid, hematopoietic and related tissue, unspecified) only when documentation doesn't support a more specific option: multifocal and multisystemic (disseminated) Langerhans-cell histiocytosis (C96.0), malignant mast cell neoplasm (C96.2), sarcoma of dendritic cells (accessory cells) (C96.4), multifocal and unisystemic Langerhans-cell histiocytosis (C96.5), Unifocal Langerhans-cell histiocytosis (C96.6), histiocytic sarcoma (C96.A) and other specified malignant neoplasms of lymphoid, hematopoietic and related tissue (C96.Z).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 820 (Lymphoma and Leukemia with Major O.R. Procedures with MCC, relative weight 6.2481), DRG 821 (Lymphoma and Leukemia with Major O.R. Procedures with CC, relative weight 2.2023), DRG 822 (Lymphoma and Leukemia with Major O.R. Procedures without CC/MCC, relative weight 1.1272) and 6 more, in Pre-MDC and MDC 17 (Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 202.90 (other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, unspecified site, extranodal and solid organ sites), 202.91 (other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, lymph nodes of head, face, and neck), 202.92 (other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, intrathoracic lymph nodes) and 6 more.
Notes that apply from higher levels
Instructions written at a parent level also apply to C96.9.
› From C96 Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
- personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)
Broader instructions also apply from C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue and Chapter 2: Neoplasms.
Table of Drugs & Neoplasms entries
- Neoplasm, neoplastic › bone (periosteum) › marrow NEC (any bone) — Malignant Primary
- Neoplasm, neoplastic › hematopoietic, hemopoietic tissue NEC — Malignant Primary
- Neoplasm, neoplastic › lymph, lymphatic channel NEC › gland (secondary) › primary (any site) NEC — Malignant Primary
- Neoplasm, neoplastic › lymph, lymphatic channel NEC › node › primary NEC — Malignant Primary
- Neoplasm, neoplastic › marrow (bone) NEC — Malignant Primary
- Neoplasm, neoplastic › spine, spinal (column) › marrow NEC — Malignant Primary
- Neoplasm, neoplastic › vertebra (column) › marrow NEC — Malignant Primary
Codes whose notes reference C96.9
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC PRE · Pre-MDC
MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms
MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms
MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms
ICD-9-CM equivalent
Converter →- 202.90Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, unspecified site, extranodal and solid organ sitesapproximate
- 202.91Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, lymph nodes of head, face, and neckapproximate
- 202.92Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, intrathoracic lymph nodesapproximate
- 202.93Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, intra-abdominal lymph nodesapproximate
- 202.94Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, lymph nodes of axilla and upper limbapproximate
- 202.95Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, lymph nodes of inguinal region and lower limbapproximate
- 202.96Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, intrapelvic lymph nodesapproximate
- 202.97Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, spleenapproximate
- 202.98Other and unspecified malignant neoplasms of lymphoid and histiocytic tissue, lymph nodes of multiple sitesapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about C96.9
Is C96.9 billable?
- Yes. C96.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can C96.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict C96.9 as a principal diagnosis.
Is C96.9 a CC or MCC?
- C96.9 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does C96.9 group to?
- C96.9 is used in the MS-DRG v44.0 logic for MS-DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC), MS-DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC), MS-DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC), MS-DRG 820 (Lymphoma and Leukemia with Major O.R. Procedures with MCC), MS-DRG 821 (Lymphoma and Leukemia with Major O.R. Procedures with CC), MS-DRG 822 (Lymphoma and Leukemia with Major O.R. Procedures without CC/MCC) and 6 more. Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for C96.9?
- The CMS General Equivalence Mappings map C96.9 to ICD-9-CM 202.90, 202.91, 202.92, 202.93 and 5 more.