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Common Endocrinologist ICD-10 Codes for 2026

Updated: 2 days ago

Doctor in white coat holding a red heart model, beside text: Common Endocrinologist ICD-10 Codes for 2026. Blue and white design.


Endocrinologists manage some of the most prevalent chronic conditions today, from diabetes and thyroid disorders to adrenal issues and metabolic syndromes. As we move into 2026, staying updated on common endocrinologist ICD-10 codes is essential for accurate documentation, compliant billing, and optimal reimbursement. These codes help capture the specificity payers demand, reducing denials and supporting better patient outcomes.

This in-depth guide explores the common endocrinologist ICD-10 codes for 2026, categorized by major conditions, with highlights on new additions like diabetes in remission and thyroid eye disease expansions. We'll cover best practices, documentation tips, and how precise coding impacts your practice's revenue cycle.

At Sirius Solutions Global, we've partnered with endocrinology practices to master these codes using AI-driven tools and expert coders. Our solutions ensure clean claims and fewer denials, letting you focus on patient care.


Key 2026 ICD-10 updates for endocrinology including diabetes remission coding, thyroid eye disease specificity, and best practices for documentation and AI-assisted coding.





Endocrinology involves ongoing management of hormonal imbalances, often with comorbidities that require detailed coding. Payers like Medicare and commercial insurers increasingly scrutinize claims for medical necessity and specificity.

The FY 2026 ICD-10-CM updates (effective October 1, 2025) introduce over 400 new codes, including key endocrinology additions for diabetes remission, hyperoxaluria types, and thyroid eye disease laterality. Using outdated or nonspecific codes can lead to denials costing practices thousands annually.

Mastering these common endocrinologist ICD-10 codes ensures compliance and maximizes revenue.


A patient is examined by a doctor on the left, and "Diabetes" text with a glucose meter is on the right. Text: Endocrinologist vs Diabetologist.





Diabetes dominates endocrinology visits.

  • E11.9 – Type 2 diabetes mellitus without complications (most common)

  • E11.65 – Type 2 diabetes mellitus with hyperglycemia

  • E11.621 – Type 2 diabetes mellitus with foot ulcer

  • E10.9 – Type 1 diabetes mellitus without complications

  • New for 2026: E11.A – Type 2 diabetes mellitus without complications in remission

Specify complications for higher accuracy


List of common ICD-10 codes for thyroid disorders, adrenal issues, obesity, osteoporosis, and PCOS, with 2026 expansions for thyroid eye disease laterality.

Thyroid Disorders (E00-E07)

Thyroid issues are frequent.

  • E03.9 – Hypothyroidism, unspecified

  • E05.90 – Thyrotoxicosis, unspecified

  • E06.3 – Autoimmune thyroiditis (Hashimoto's)

  • E04.9 – Nontoxic goiter, unspecified

  • New expansions: Thyroid eye disease (H05.83 subgroup with laterality)

Other Common Categories

  • Adrenal/Pituitary: E27.1 (Primary adrenocortical insufficiency), E23.0 (Hypopituitarism)

  • Obesity/Metabolic: E66.01 (Morbid obesity), E78.5 (Hyperlipidemia)

  • Osteoporosis: M81.0 (Age-related osteoporosis without fracture)

  • Polycystic Ovary Syndrome: E28.2


Here's a reference table for common endocrinologist ICD-10 codes in 2026:





  • Diabetes in Remission: New code E11.A for T2DM without complications in remission – crucial for accurate long-term tracking.

  • Thyroid Eye Disease: Expanded to specify laterality (e.g., bilateral).

  • Hyperoxaluria: New subtypes for better specificity.

  • General Guideline Changes: Emphasis on sequencing and "in remission" documentation.

These updates improve clinical precision but require EHR adjustments.


Comparison of endocrinologist vs diabetologist, with a table of common diabetes ICD-10 codes for 2026 including E11.9, E11.65, E11.621, E10.9, and the new E11.A for remission.

Best Practices for Using Endocrinologist ICD-10 Codes

  • Code to highest specificity (e.g., with complications).

  • Document linkages (e.g., diabetes with neuropathy).

  • Use Z codes for screenings (Z13.29 for endocrine).

  • Avoid unspecified when details available.

Tools like AI scrubbers catch errors pre-submission.

Common Coding Errors and Denial Prevention

Frequent issues:

  • Unspecified codes when specific apply.

  • Missing remission status.

  • Incorrect sequencing for manifestations.

Prevention: Regular training, audits, and specialized RCM partners.


Sirius Solutions Global supports endocrinology coding with AI tools CODIN and DEXA for compliance and higher revenue cycle collections.




At Sirius Solutions Global, we handle common endocrinologist ICD-10 codes with precision. Our AI agents (CODIN for coding, DEXA for appeals) ensure compliance and higher collections.


FAQs: Common Endocrinologist ICD-10 Codes for 2026


What's the most used diabetes code? 

E11.9 for Type 2 without complications.


New code for diabetes remission? 

E11.A (Type 2 without complications in remission).


Best code for hypothyroidism? 

E03.9 (unspecified).


Thyroid eye disease updates? 

Laterality specified in H05.83 subgroup.


How to avoid denials? 

Specificity and strong documentation.


Final Thoughts on Common Endocrinologist ICD-10 Codes in 2026

Navigating these common endocrinologist ICD-10 codes in 2026 demands vigilance, but it pays off in smoother operations and better revenue. Stay updated and consider expert support for seamless implementation.

Partner with Sirius Solutions Global for endocrinology-specific RCM excellence.

Updated December 23, 2025. Always verify with official CMS/AMA sources.






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