2026 ICD-10-CM Diagnosis Code C85.90Non-Hodgkin lymphoma, unspecified, unspecified site

ICD-10-CM Codes›C00–D49›C81-C96›C85

ICD-10-CM C85.90
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C85.90 is a billable ICD-10-CM diagnosis code for Non-Hodgkin lymphoma, unspecified, unspecified site. 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
C85.90
Billable Status
Yes — Valid for Submission
Code Describes
Non-Hodgkin lymphoma, unspecified, unspecified site
Short Description
Non-Hodgkin lymphoma, unspecified, unspecified site
Same as the full description in the CMS dataset.
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 CodeC85.90Non-Hodgkin lymphoma, unspecified, unspecified site

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Composite Hodgkin and non-Hodgkin lymphoma
  • Diffuse non-Hodgkin's lymphoma Lugano stage I
  • Diffuse non-Hodgkin's lymphoma Lugano stage II
  • Diffuse non-Hodgkin's lymphoma Lugano stage III
  • Diffuse non-Hodgkin's lymphoma Lugano stage IV
  • High grade
  • Low grade
  • Low grade lymphoma, stage 4
  • Lymphoma confined to mucosa AND/OR submucosa
  • Lymphoma extent of involvement not specified
  • Lymphoma finding
  • Lymphoma involves a single lymph node region
  • Lymphoma involves liver
  • Lymphoma involves muscular wall AND/OR subserosa
  • Lymphoma of kidney
  • Lymphoma stage I
  • Lymphoma stage Ie
  • Lymphoma stage II
  • Lymphoma stage IIe
  • Lymphoma stage III
  • Lymphoma stage III 1
  • Lymphoma stage III 2
  • Lymphoma stage IIIe
  • Lymphoma stage IIIs
  • Lymphoma stage IIIse
  • Lymphoma stage IV
  • Lymphomatous infiltrate of kidney
  • Lymphosarcoma
  • Lymphosarcoma and reticulosarcoma
  • Malignant lymphoma
  • Malignant lymphoma in remission
  • Malignant lymphoma of lymph nodes
  • Non-Hodgkin lymphoma associated with Human immunodeficiency virus infection
  • Non-Hodgkin's lymphoma
  • Non-Hodgkin's lymphoma in remission
  • Surgical circumferential margin finding
  • Surgical circumferential margin involved by lymphoma
  • Surgical circumferential margin involved by malignant neoplasm
  • Surgical distal margin involved by lymphoma
  • Surgical distal margin involved by malignant neoplasm
  • Surgical distal margin involved by tumor
  • Surgical margin involvement by lymphoma cannot be assessed
  • Surgical margin uninvolved by lymphoma
  • Surgical proximal margin involved by lymphoma
  • Surgical proximal margin involved by malignant neoplasm

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Lymphoma(of) (malignant)
    • Pyelonephritis
      • in (due to)
        • lymphoma NEC

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 C85.90 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 C85.90Overview

Is C85.90 (Non-Hodgkin lymphoma, unspecified) a billable code?

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

What MS-DRG does C85.90 group to?

When Non-Hodgkin lymphoma, unspecified, unspecified site 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 C85.90?

Under the General Equivalence Mappings, Non-Hodgkin lymphoma, unspecified, unspecified site 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.