ICD-10 E13
Non-Billable HeaderOther specified diabetes mellitus
About ICD-10-CM E13
ICD-10-CM code E13 represents Other specified diabetes mellitus. This is a non-billable header code in the Endocrine, Nutritional, and Metabolic chapter (block E13). The 2026 edition of ICD-10-CM E13 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with E13. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- diabetes (mellitus) due to autoimmune process (E10.-)
- diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction (E10.-)
- diabetes mellitus due to underlying condition (E08.-)
- drug or chemical induced diabetes mellitus (E09.-)
- gestational diabetes (O24.4-)
- neonatal diabetes mellitus (P70.2)
- type 1 diabetes mellitus (E10.-)
Includes
- diabetes mellitus due to genetic defects of beta-cell function
- diabetes mellitus due to genetic defects in insulin action
- postpancreatectomy diabetes mellitus
- postprocedural diabetes mellitus
- secondary diabetes mellitus NEC
Use Additional Code
When coding E13, also report these additional codes when applicable.
- code to identify control using:
- injectable non-insulin antidiabetic drugs (Z79.85)
- insulin (Z79.4)
- oral antidiabetic drugs (Z79.84)
- oral hypoglycemic drugs (Z79.84)
Medicare LCD Coverage for E13
Local Coverage Determinations (LCDs) from CMS MACs that list E13 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E13.
3 Cigna
CPT Codes Commonly Billed with E13
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 80053 Comprehensive metabolic panel for diabetes management Internal Medicine
Codes Adjacent To E13
Other codes in section E08-E13 (Diabetes mellitus).
ICD-10 E13, Billing FAQ
Is ICD-10 code E13 billable? +
No, E13 is a non-billable header code. Use a more specific child code from block E13 when submitting claims.
What codes are Type 1 Excludes for E13? +
Type 1 Excludes (never code together with E13): diabetes (mellitus) due to autoimmune process (E10.-); diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction (E10.-); diabetes mellitus due to underlying condition (E08.-)
What CPT codes are commonly billed with E13? +
Procedures frequently paired with E13 include: 80053.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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