2026 ICD-10-CM Diagnosis Code E07.9Disorder of thyroid, unspecified

ICD-10-CM Codes›E00–E89›E00-E07›E07

ICD-10-CM E07.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E07.9 is a billable ICD-10-CM diagnosis code for disorder of thyroid, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 11 through 13, 643 through 645. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Thyroid disorders.

E07.9 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 2026.

Code Identity

ICD-10-CM Code
E07.9
Billable Status
Yes — Valid for Submission
Code Describes
Disorder of thyroid, unspecified
Short Description
Disorder of thyroid, unspecified
Same as the full description in the CMS dataset.
Parent Code
E07
Other disorders of thyroid

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE00-E07Disorders of thyroid gland
CategoryE07Other disorders of thyroid
This CodeE07.9Disorder of thyroid, unspecified

Medicare Risk Adjustment (HCC)Billing

E07.9 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.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
no payment category in the model that pays 100% of MA risk scores
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Part D (RxHCC)
RxHCC 44 — Thyroid Disorders
also risk-adjusts in the Part D prescription drug model (V08)

Source: CMS Payment Year 2026 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.

  • Alopecia due to thyroid disorder
  • Alopecia, nail dystrophy, ophthalmic complications, thyroid dysfunction, hypohidrosis, ephelides, enteropathy and respiratory tract infections
  • Anemia of endocrine disorder
  • Anemia of thyroid dysfunction
  • Disorder of thyroid gland
  • Endocrine alopecia
  • Inactive thyroid disease
  • Perinatal fetal and/or neonatal thyroid disorder
  • Postpartum thyroid disease
  • Thyroid disease in mother complicating childbirth
  • Thyroid disease in mother complicating pregnancy, childbirth AND/OR puerperium
  • Thyroid disease in pregnancy
  • Thyroid disease monitoring status
  • Thyroid disease treatment changed
  • Thyroid disease treatment started
  • Thyroid dysfunction
  • Thyroid dysfunction during pregnancy, childbirth and the puerperium
  • Thyroid symptom change

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR END001
Thyroid disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

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 E07.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
246.9 Disorder of thyroid NOS
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E07.9Overview

What is the ICD-10 code for disorder of thyroid, unspecified?

The ICD-10-CM code for disorder of thyroid, unspecified is E07.9 (sometimes written as E079). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is E07.9 (Other disorders of thyroid) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disorder of thyroid, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does E07.9 group to?

When disorder of thyroid, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 11, 12, 13, 643, 644, 645, with relative weights from 0.7683 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of E07.9?

Under the General Equivalence Mappings, disorder of thyroid, unspecified converts to ICD-9-CM 246.9 (disorder of thyroid NOS). The mapping is a direct match.

Does E07.9 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage: E07.9 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 44 (Thyroid Disorders).