ICD10
ICD-10 Code E13: Other specified diabetes mellitus
Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).
đź“‹Clinical overview
This ICD-10 code is commonly used when documentation describes diabetes or diabetes-related clinical context. The exact code selection depends on the diabetes type, whether complications are documented, and how specific the charting is.
When is it used?
- May be used when a clinician documents other specified diabetes mellitus in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
đź©şClinical context
When commonly used
- Outpatient and inpatient documentation where diabetes is an active diagnosis or part of chronic disease management.
- Risk adjustment, utilization review, and continuity-of-care summaries where diabetes status needs to be carried forward.
Common workup
- Common related testing on this page includes Hemoglobin A1c, Fasting blood glucose, Urine albumin creatinine ratio.
- Related procedures or service context already linked on this page include Diabetic retinal exam, Diabetic foot examination, Medical nutrition therapy.
Common management context
- Diabetes care often involves primary care, endocrinology, eye screening, kidney-risk monitoring, and foot-care follow-up.
- Medication reconciliation and longitudinal follow-up matter because treatment intensity and complication status can change over time.
- Specialist context already linked on this page includes Endocrinologist, General Physician.
🔍Key distinctions
Important notes
- ICD-10 diabetes coding usually becomes more specific when the record documents complications such as kidney disease, neuropathy, retinopathy, ulcers, or hypoglycemia.
- If the record identifies the diabetes type or a complication clearly, a more detailed family code may be more appropriate than a broad default code.
Important exclusions
- 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)
Related codes to consider
E13.8Other specified diabetes mellitus with unspecified complications
Related diabetes-family ICD-10 code; documentation often becomes more specific when type or complication detail is available.
E13.9Other specified diabetes mellitus without complications
Related diabetes-family ICD-10 code; documentation often becomes more specific when type or complication detail is available.
Code hierarchy
chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E08-E13Diabetes mellitus
currentE08-E13
Official coding notes
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
Applicable to
- 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)
Excludes1 (do not code together)
- 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.-)
Use additional code
- 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)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
EndocrinologistGeneral Physician
Related tests
Hemoglobin A1c
Commonly used to review longer-term glycemic control in diabetes care.
Fasting blood glucose
May help assess fasting glucose levels in diabetes evaluation and follow-up.
Urine albumin creatinine ratio
Often reviewed when screening for diabetic kidney involvement.
Related procedures
Diabetic retinal exam
Commonly part of diabetes complication screening and follow-up pathways.
Diabetic foot examination
Often used in routine diabetes care to review neuropathy and ulcer risk.
Medical nutrition therapy
May appear in care pathways for diabetes education and ongoing management.
Related codes
Sibling codes
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
E13
Replacement codes
E13.8 — Other specified diabetes mellitus with unspecified complicationsE13.9 — Other specified diabetes mellitus without complications
Common synonyms
Other specified diabetes mellitus
Frequently asked questions
đź“šReferences
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.