U.S. ICD-10-CM · FY 2027

C73 ICD-10-CM Code: Malignant neoplasm of thyroid gland

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

C73

Malignant neoplasm of thyroid gland

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where C73 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Malignant neoplasms of thyroid and other endocrine glands (C73-C75)

  3. 3

    Category C73

    Malignant neoplasm of thyroid gland

  4. 4

    Code C73

    Malignant neoplasm of thyroid gland

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for C73.

Code first

No “code first” instruction is listed for C73.

Use additional code

  • code to identify any functional activity

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for C73.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for C73.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code C73 mean?

C73 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of thyroid gland.”

Is C73 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, C73 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is C73 located in ICD-10-CM?

C73 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of thyroid and other endocrine glands (C73-C75) (C73–C75), under category C73, Malignant neoplasm of thyroid gland.

What coding notes are listed for C73?

No inclusion terms are listed for C73 in this reference record. No code-first instruction is listed. Additional-code instructions: code to identify any functional activity. No Excludes1 note is listed. No Excludes2 note is listed.

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