2024 ICD-10-CM Diagnosis Code D18.1

Lymphangioma, any site

ICD-10-CM Code:
ICD-10 Code for:
Lymphangioma, any site
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Neoplasms
    • Benign neoplasms, except benign neuroendocrine tumors
      • Hemangioma and lymphangioma, any site

D18.1 is a billable diagnosis code used to specify a medical diagnosis of lymphangioma, any 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.

Approximate Synonyms

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

  • Acquired lymphangioma
  • Acquired progressive lymphangioma
  • Benign extra-axial hygroma
  • Cavernous lymphangioma
  • Cavernous lymphangioma of skin
  • Chronic disease of lymphatic vessels
  • Congenital anomaly of lymphatic structure of trunk
  • Congenital lymphangioma
  • Cystic hygroma
  • Diffuse lymphangioma
  • Diffuse pulmonary lymphangiomatosis
  • Hemolymphangioma of conjunctiva
  • Kaposiform lymphangiomatosis
  • Lymphangioma
  • Lymphangioma circumscriptum
  • Lymphangioma of appendix
  • Lymphangioma of conjunctiva
  • Lymphangioma of large intestine
  • Lymphangioma of larynx
  • Lymphangioma of liver
  • Lymphangioma of orbit
  • Lymphangioma of skin
  • Lymphangioma of small intestine
  • Lymphangiomatosis
  • Multiple lymphangiomas of skin
  • Oral lymphangioma
  • Primary laryngeal lymphangioma
  • Segmental lymphangiomatosis
  • Simple lymphangioma
  • Subdural hygroma
  • Systemic lymphangiomatosis

Clinical Classification

Clinical Information

  • Lymphangioma

    a benign tumor resulting from a congenital malformation of the lymphatic system. lymphangioendothelioma is a type of lymphangioma in which endothelial cells are the dominant component.
  • Lymphangioma, Cystic

    a cystic growth originating from lymphatic tissue. it is usually found in the neck, axilla, or groin.
  • Diffuse Pulmonary Lymphangiomatosis

    lymphangiomatosis diffusely involving the lung parenchyma.
  • Lymphangioma Circumscriptum

    a localized lymphangioma characterized by microcystic changes.
  • Liver Lymphangiomatosis

    multiple lymphangiomas that affect the liver and other anatomic sites. although histologically benign, diffuse lymphangiomatosis that affects the liver and multiple organs has a poor prognosis.
  • Lymphangiomatosis

    a lymphangioma affecting several anatomic sites.

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 D18.1 to ICD-9-CM

  • ICD-9-CM Code: 228.1 - Lymphangioma, any site

Patient Education

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Tumors are made up of extra cells. Normally, cells grow and divide to form new cells as your body needs them. When cells grow old, they die, and new cells take their place. Sometimes, this process goes wrong. New cells form when your body does not need them, and old cells do not die when they should. These extra cells can divide without stopping and may form tumor.

Treatment often involves surgery. Benign tumors usually don't grow back.

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] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.