2024 ICD-10-CM Diagnosis Code C73

Malignant neoplasm of thyroid gland

ICD-10-CM Code:
C73
ICD-10 Code for:
Malignant neoplasm of thyroid gland
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Neoplasms
    (C00–D49)
    • Malignant neoplasms of thyroid and other endocrine glands
      (C73-C75)
      • Malignant neoplasm of thyroid gland
        (C73)

C73 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of thyroid gland. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

The following anatomical sites found in the Table of Neoplasms reference this diagnosis code given the correct histological behavior: Neoplasm, neoplastic thyroglossal duct or Neoplasm, neoplastic thyroid (gland) .

Approximate Synonyms

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

  • Anaplastic thyroid carcinoma
  • Carcinoma of thyroid
  • Differentiated thyroid carcinoma
  • Diffuse sclerosing papillary thyroid carcinoma
  • Familial nonmedullary primary thyroid carcinoma
  • Familial papillary thyroid carcinoma with renal papillary neoplasia syndrome
  • Follicular neoplasm of thyroid
  • Follicular neoplasm of thyroid
  • Follicular thyroid carcinoma
  • Hurthle cell carcinoma of thyroid
  • Local recurrence of malignant tumor of thyroid gland
  • Malignant tumor of thyroid gland
  • Medullary thyroid carcinoma
  • Mixed follicular and papillary thyroid carcinoma
  • Neoplasm of thyroglossal duct
  • Oxyphilic adenocarcinoma
  • Oxyphilic adenocarcinoma
  • Papillary thyroid carcinoma
  • Papillary thyroid carcinoma
  • Papillary thyroid carcinoma
  • Papillary thyroid carcinoma
  • Papillary thyroid carcinoma with renal papillary neoplasia
  • Parafollicular cell carcinoma
  • Primary differentiated carcinoma of thyroid gland
  • Primary differentiated carcinoma of thyroid gland
  • Primary diffuse sclerosing papillary thyroid carcinoma
  • Primary follicular thyroid carcinoma
  • Primary Hurthle cell carcinoma of thyroid
  • Primary malignant neoplasm of thyroglossal duct
  • Primary malignant neoplasm of thyroid gland
  • Primary mixed follicular and papillary thyroid carcinoma
  • Primary oxyphilic adenocarcinoma
  • Primary papillary thyroid carcinoma
  • Primary papillary thyroid carcinoma
  • Primary papillary thyroid carcinoma with renal papillary neoplasia
  • Primary parafollicular cell carcinoma
  • Primary poorly differentiated carcinoma of thyroid gland
  • Primary undifferentiated carcinoma of thyroid gland

Clinical Classification

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.


Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code to identify any functional activity

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 C73 to ICD-9-CM

  • ICD-9-CM Code: 193 - Malign neopl thyroid

Table of Neoplasms

This code is referenced in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»Neoplasm, neoplastic
  »thyroglossal duct
C73C79.89D09.3D34D44.0D49.7
»Neoplasm, neoplastic
  »thyroid (gland)
C73C79.89D09.3D34D44.0D49.7

Patient Education


Thyroid Cancer

What is thyroid cancer?

Thyroid cancer is a cancer that starts in the tissues of the thyroid. Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods.

What are the different types of thyroid cancer?

There are different types of thyroid cancer; the main ones include:

  • Differentiated thyroid cancer, which includes papillary cancer and follicular cancer
  • Medullary thyroid cancer
  • Anaplastic thyroid cancer

Who is more likely to develop thyroid cancer?

Certain people are more likely to develop thyroid cancer. Your risk is higher if you:

  • Are between ages 25 and 65
  • Are a woman
  • Are Asian
  • Were exposed to certain types of radiation, including from radiation treatments to your head or neck as a child or from a radiation emergency
  • Have had a goiter (enlarged thyroid)
  • Having certain genetic conditions, including certain types of multiple endocrine neoplasia
  • Have a family history of thyroid cancer or thyroid disease

What are the symptoms of thyroid cancer?

Thyroid cancer may not cause symptoms at first. It is sometimes found during a routine physical exam. You may get signs or symptoms as the cancer gets bigger. The symptoms may include:

  • A lump (nodule) in the neck
  • Trouble breathing
  • Trouble swallowing
  • Pain when swallowing
  • Hoarseness or other changes to your voice that do not get better

How is thyroid cancer diagnosed?

To find out if you have thyroid cancer, your health care provider may use:

  • A physical exam, including checking your neck for swelling, lumps, or anything that seems unusual
  • A medical history
  • Thyroid tests
  • Other blood or imaging tests
  • A biopsy

What are the treatments for thyroid cancer?

Treatment for thyroid cancer depends on the type of cancer you have and whether the cancer has spread. Often, more than one type of treatment may be needed. The treatment options include:

  • Surgery.
  • Radiation therapy, including radioactive iodine therapy.
  • Chemotherapy.
  • Thyroid hormone therapy.
  • Targeted therapy, which uses drugs or other substances that attack specific cancer cells with less harm to normal cells.
  • Watchful waiting, which means that you don't get treatment right away. Your regularly checks to see if your signs or symptoms appear or change.

NIH: National Cancer Institute


[Learn More in MedlinePlus]

Thyroid Cancer—Patient Version

Learn about thyroid cancer risk factors, symptoms, tests to diagnose, factors affecting prognosis, staging, and treatment.
[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.

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.