Version 2024
No Valid Principal Dx

2024 ICD-10-CM Diagnosis Code R16.1

Splenomegaly, not elsewhere classified

Short Description:
Splenomegaly, not elsewhere classified
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
    • Symptoms and signs involving the digestive system and abdomen
      • Hepatomegaly and splenomegaly, not elsewhere classified

R16.1 is a billable diagnosis code used to specify a medical diagnosis of splenomegaly, not elsewhere classified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Infection of spleen
  • Infection of spleen
  • Mass of spleen
  • Optic nerve edema, splenomegaly syndrome
  • Pain due to enlargement of spleen
  • Schistosomal splenomegaly
  • Schistosomal splenomegaly
  • Spleen palpable
  • Spleen palpable below costal margin
  • Spleen palpable in right lateral position
  • Spleen palpable on inspiration
  • Splenic notch palpable
  • Splenic schistosomal giant cell lymphoma
  • Splenomegaly
  • Splenomegaly co-occurrent with human immunodeficiency virus infection
  • Splenomegaly due to storage disease
  • Tip of spleen palpable

Clinical Information

  • Gaucher Disease-. an autosomal recessive disorder caused by a deficiency of acid beta-glucosidase (glucosylceramidase) leading to intralysosomal accumulation of glycosylceramide mainly in cells of the mononuclear phagocyte system. the characteristic gaucher cells, glycosphingolipid-filled histiocytes, displace normal cells in bone marrow and visceral organs causing skeletal deterioration, hepatosplenomegaly, and organ dysfunction. there are several subtypes based on the presence and severity of neurological involvement.
  • Idiopathic Noncirrhotic Portal Hypertension-. portal hypertension without known risk factors for hypertension, e.g., hepatic cirrhosis and schistosomiasis. idiopathic noncirrhotic portal hypertension is most often associated with pathology in the portal system vasculature.
  • Splenomegaly-. enlargement of the spleen.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Splenomegaly NOS

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 to ICD-9-CM Code

Source ICD-10-CM CodeTarget ICD-9-CM Code
R16.1789.2 - Splenomegaly
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

Spleen Diseases

Your spleen is an organ above your stomach and under your ribs on your left side. It is about as big as your fist. The spleen is part of your lymphatic system, which fights infection and keeps your body fluids in balance. It contains white blood cells that fight germs. Your spleen also helps control the amount of blood in your body, and destroys old and damaged cells.

Certain diseases might cause your spleen to swell. You can also damage or rupture your spleen in an injury, especially if it is already swollen. If your spleen is too damaged, you might need surgery to remove it. You can live without a spleen. Other organs, such as your liver, will take over some of the spleen's work. Without a spleen, however, your body will lose some of its ability to fight infections.

[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.