2021 ICD-10-CM Code C73

Malignant neoplasm of thyroid gland

Version 2021
Billable Code
Neoplasm Malignant Primary

Valid for Submission

C73 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of thyroid gland. The code C73 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code C73 might also be used to specify conditions or terms like anaplastic thyroid carcinoma, carcinoma of thyroid, diffuse sclerosing papillary thyroid carcinoma, familial nonmedullary thyroid carcinoma, familial papillary thyroid carcinoma with renal papillary neoplasia syndrome , follicular neoplasm of thyroid, etc.

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

ICD-10:C73
Short Description:Malignant neoplasm of thyroid gland
Long Description:Malignant neoplasm of thyroid gland

Code Classification

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code C73:


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.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code C73 are found in the index:

Approximate Synonyms

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

Convert C73 to ICD-9 Code

Table of Neoplasms

The code C73 is included 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

Information for Patients


Thyroid Cancer

Your thyroid is a butterfly-shaped gland in your neck, just above your collarbone. It makes hormones that help the body work normally. There are several types of cancer of the thyroid gland. You are at greater risk if you

You should see a doctor if you have a lump or swelling in your neck. Doctors use a physical exam, thyroid tests, other blood and imaging tests, and a biopsy to diagnose thyroid cancer. Treatment depends on the type of cancer you have and how far the cancer has spread. Many patients receive a combination of treatments. They may include surgery, radioactive iodine, hormone treatment, radiation therapy, chemotherapy, or targeted therapy. Targeted therapy uses substances that attack cancer cells without harming normal cells.

NIH: National Cancer Institute


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Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)