2027 ICD-10-CM Diagnosis Code E07.0Hypersecretion of calcitonin
ICD-10-CM Codes›E00–E89›E00-E07›E07
- Billable — Valid for Submission
- Not Chronic
E07.0 is a billable ICD-10-CM diagnosis code for hypersecretion of calcitonin. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 643 through 645. Coders also document this condition as c-cell hyperplasia of thyroid. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Thyroid disorders.
E07.0 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 44 for payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
E07.0 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- C-cell hyperplasia of thyroid
- Disorder of thyrocalcitonin secretion
- Hypersecretion of calcitonin
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to E07.0: its own notes plus those printed at Chapter 4. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- C-cell hyperplasia of thyroid
- Hypersecretion of thyrocalcitonin
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Notes
General instructions on how these codes are used.
- 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.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name E07.0, its category, or a range that includes it.
Applicable To 1
These notes mention E07.0.
- Z83.4 Family history of other endocrine, nutritional and metabolic diseases
Code First 1
These codes say to code first a condition named in the note, and E07.0 is one of the conditions named.
- G63 Polyneuropathy in diseases classified elsewhere
Notes 1
These notes mention E07.0.
- Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseasesAll 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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disorder (of) See Also: Disease;
calcitonin E07.0
thyrocalcitonin E07.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Thyroid Diseases
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.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert E07.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About E07.0Overview
What is the ICD-10 code for hypersecretion of calcitonin?
The ICD-10-CM code for hypersecretion of calcitonin is E07.0 (sometimes written as E070). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is E07.0 (Other disorders of thyroid) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report hypersecretion of calcitonin on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does E07.0 group to?
When hypersecretion of calcitonin is the principal diagnosis on an inpatient stay, it groups to MS-DRG 644, 645, 643, with relative weights from 0.7461 to 1.6138 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of E07.0?
Under the General Equivalence Mappings, hypersecretion of calcitonin converts to ICD-9-CM 246.0 (dis thyrocalciton secret). The mapping is a direct match.
Does E07.0 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: E07.0 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 44 (Thyroid Disorders).
