2024 ICD-10-CM Diagnosis Code C85.90

Non-Hodgkin lymphoma, unspecified, unspecified site

ICD-10-CM Code:
ICD-10 Code for:
Non-Hodgkin lymphoma, unspecified, unspecified site
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Code Navigator:

Code Classification

  • Neoplasms
    • Malignant neoplasms of lymphoid, hematopoietic and related tissue
      • Other specified and unspecified types of non-Hodgkin lymphoma

C85.90 is a billable diagnosis code used to specify a medical diagnosis of non-hodgkin lymphoma, unspecified, unspecified site. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like C85.90 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis 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 finding
  • Lymphoma finding
  • Lymphoma finding
  • 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

Clinical Classification

Clinical Information

  • Lymphoma Finding

    a term that refers to clinicopathologic findings related to lymphomas.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert C85.90 to ICD-9-CM

  • ICD-9-CM Code: 202.80 - Oth lymp unsp xtrndl org
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


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.

Non-Hodgkin lymphomas begin when a type of white blood cell, called a T cell or B cell, becomes abnormal. The cell divides again and again, making more and more abnormal cells. These abnormal cells can spread to almost any other part of the body. Most of the time, doctors don't know why a person gets non-Hodgkin lymphoma. You are at increased risk if you have a weakened immune system or have certain types of infections.

Non-Hodgkin lymphoma can cause many symptoms, such as :

  • Swollen, painless lymph nodes in the neck, armpits or groin
  • Unexplained weight loss
  • Fever
  • Soaking night sweats
  • Coughing, trouble breathing or chest pain
  • Weakness and tiredness that don't go away
  • Pain, swelling or a feeling of fullness in the abdomen

Your doctor will diagnose lymphoma with a physical exam, blood tests, a chest x-ray, and a biopsy. Treatments include chemotherapy, radiation therapy, targeted therapy, biological therapy, or therapy to remove proteins from the blood. Targeted therapy uses drugs or other substances that attack specific cancer cells with less harm to normal cells. Biologic therapy boosts your body's own ability to fight cancer. If you don't have symptoms, you may not need treatment right away. This is called watchful waiting.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[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.