C73 – Malignant neoplasm of thyroid gland
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of thyroid and other endocrine glands
ICD-10-CM code
C73
- Code
C73(claims format:C73)- Description
- Malignant neoplasm of thyroid gland
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C73-C75 Malignant neoplasms of thyroid and other endocrine glands
Notes for C73
Use additional code:
- code to identify any functional activity
Index terms for C73
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Goiter, malignant
- Goiter, cancerous
- Carcinoma, Hurthle cell
- Hurthle cell, carcinoma
- Wuchernde Struma Langhans
- Adenocarcinoma, Hurthle cell
- Hurthle cell, adenocarcinoma
- Tumor, Hurthle cell, malignant
- Tumor, nonencapsulated sclerosing
- Carcinoma, follicular, trabecular
- Carcinoma, C cell, unspecified site
- Carcinoma, follicular, pure follicle
- Carcinoma, follicular, with papillary
- Carcinoma, papillary, with follicular
- Carcinoma, nonencapsulated sclerosing
- Adenocarcinoma, follicular, trabecular
- Carcinoma, follicular, unspecified site
- Carcinoma, papillary, follicular variant
- Carcinoma, follicular, well differentiated
- Adenocarcinoma, follicular, with papillary
- Adenocarcinoma, papillary, with follicular
- Adenocarcinoma, nonencapsulated sclerosing
- Adenocarcinoma, follicular, unspecified site
- Adenocarcinoma, papillary, follicular variant
- Adenocarcinoma, follicular, well differentiated
Frequently asked questions
What is ICD-10 code C73?
C73 is the ICD-10-CM code for malignant neoplasm of thyroid gland, in the block C73-C75 (Malignant neoplasms of thyroid and other endocrine glands).
Is C73 a billable code?
Yes. C73 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.