Coding and coverage · ICD-10-CM
Instructional notes
Chapter 4
Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
Notes
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
This code
Inclusion terms
- C-cell hyperplasia of thyroid
- Hypersecretion of thyrocalcitonin
Chapter 4: Endocrine, nutritional and metabolic diseases · E00-E07 Disorders of thyroid gland (E00-E07)
Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.
Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.