2026 ICD-10-CM Diagnosis Code C85.99Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites

ICD-10-CM Codes›C00–D49›C81-C96›C85

ICD-10-CM C85.99
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C85.99 is a billable ICD-10-CM diagnosis code for Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 820 through 825, 840 through 842, 974 through 976. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Non-Hodgkin lymphoma.

Code Identity

ICD-10-CM Code
C85.99
Billable Status
Yes — Valid for Submission
Code Describes
Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites
Short Description
Non-Hodgkin lymphoma, unsp, extranodal and solid organ sites
Parent Code
C85.9
Non-Hodgkin lymphoma, unspecified

Code Classification

ChapterC00–D49Neoplasms
SectionC81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue
CategoryC85Other specified and unspecified types of non-Hodgkin lymphoma
This CodeC85.99Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Diffuse non-Hodgkin's lymphoma of bone
  • Diffuse non-Hodgkin's lymphoma of extranodal site
  • Diffuse non-Hodgkin's lymphoma of intestine
  • Diffuse non-Hodgkin's lymphoma of nasopharynx
  • Diffuse non-Hodgkin's lymphoma of nose
  • Diffuse non-Hodgkin's lymphoma of oral cavity
  • Diffuse non-Hodgkin's lymphoma of ovary
  • Diffuse non-Hodgkin's lymphoma of skin
  • Diffuse non-Hodgkin's lymphoma of soft tissue
  • Diffuse non-Hodgkin's lymphoma of stomach
  • Diffuse non-Hodgkin's lymphoma of uterine cervix
  • Encephalopathy with AIDS
  • Gastric lymphoma
  • Gastrointestinal lymphoma surgical margin, involved by tumor
  • Lymphoma finding
  • Lymphoma involves bone marrow
  • Lymphoma of intestine
  • Lymphoma of lower esophagus
  • Lymphoma of small bowel
  • Malignant lymphoma of breast
  • Malignant lymphoma of esophagus
  • Malignant lymphoma of extranodal AND/OR solid organ site
  • Malignant lymphoma of testis
  • Malignant lymphoma of the eye region
  • Malignant lymphoma of thyroid gland
  • Malignant neoplasm of tonsil
  • Malignant neoplasm with AIDS
  • Malignant neoplastic disease co-occurrent with human immunodeficiency virus infection
  • Metastatic malignant neoplasm to lymph nodes of lower limb
  • Metastatic malignant neoplasm to lymph nodes of upper limb
  • Metastatic malignant neoplasm to thyroid gland
  • Non-Hodgkin lymphoma of central nervous system metastatic to lymph node of lower limb
  • Non-Hodgkin lymphoma of central nervous system metastatic to lymph node of upper limb
  • Non-Hodgkin's lymphoma of bone
  • Non-Hodgkin's lymphoma of central nervous system
  • Non-Hodgkin's lymphoma of extranodal site
  • Non-Hodgkin's lymphoma of intestine
  • Non-Hodgkin's lymphoma of lung
  • Non-Hodgkin's lymphoma of nasopharynx
  • Non-Hodgkin's lymphoma of nose
  • Non-Hodgkin's lymphoma of oral cavity
  • Non-Hodgkin's lymphoma of ovary
  • Non-Hodgkin's lymphoma of skin
  • Non-Hodgkin's lymphoma of soft tissue
  • Non-Hodgkin's lymphoma of stomach
  • Non-Hodgkin's lymphoma of testis
  • Non-Hodgkin's lymphoma of tonsil
  • Non-Hodgkin's lymphoma of uterine cervix
  • Primary bone lymphoma
  • Primary cerebral lymphoma
  • Primary cerebral lymphoma co-occurrent with human immunodeficiency virus infection
  • Primary lymphoma of brain with AIDS
  • Primary oculocerebral non-Hodgkin lymphoma
  • Primary pulmonary lymphoma

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO058
Non-Hodgkin lymphoma
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Lymphoma Finding

    a term that refers to clinicopathologic findings related to lymphomas.

Patient EducationClinical

Lymphoma

Lymphoma is a cancer of a part of the immune system called the lymph system. There are many types of lymphoma. One type is Hodgkin disease. The rest are called non-Hodgkin lymphomas.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert C85.99 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
202.80 Oth lymp unsp xtrndl org
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C85.99Overview

Is C85.99 (Non-Hodgkin lymphoma, unspecified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does C85.99 group to?

When Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites is the principal diagnosis on an inpatient stay, it groups to MS-DRG 820, 821, 822, 823, 824, 825, 840, 841, 842, 974, 975, 976, with relative weights from 0.8945 to 5.8648 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of C85.99?

Under the General Equivalence Mappings, Non-Hodgkin lymphoma, unspecified, extranodal and solid organ sites converts to ICD-9-CM 202.80 (oth lymp unsp xtrndl org). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.