ICD-10 Lookup Tool
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✅ Billable/Specific Code
2025 ICD-10-CM
Effective: Oct 1, 2024
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Important: This tool uses AI to assist with code lookups. While we strive for accuracy, AI can make mistakes. Always verify information with official ICD-10 resources before using in medical billing or clinical documentation.
**2025 ICD-10-CM Diagnosis Code E11.9**
**Type 2 diabetes mellitus without complications**
🏆 **Expert Validated**
**Years:** 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | **2025**
**✅ Billable/Specific Code**
E11.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
**Effective Date:** October 1, 2024
This is the American ICD-10-CM version of E11.9 - other international versions of ICD-10 E11.9 may differ.
**📘 Coding Hierarchy**
**Chapter:** Chapter 4 (E00-E89) - Endocrine, nutritional and metabolic diseases
**Block:** E08-E13 - Diabetes mellitus
**Category:** E11 - Type 2 diabetes mellitus
**🧠 Synonyms**
• Adult-onset diabetes
• Non-insulin-dependent diabetes mellitus
• NIDDM
**🩺 Clinical Information**
Type 2 diabetes mellitus is a chronic condition characterized by insulin resistance and relative insulin deficiency.
Diagnosis is based on elevated blood glucose levels, typically confirmed by fasting plasma glucose, HbA1c, or oral glucose tolerance test.
Proper documentation should include any complications or manifestations for accurate coding.
**📊 MS-DRG Groupings (CMS v42.0):**
• MS-DRG 637 - Diabetes with MCC
• MS-DRG 638 - Diabetes with CC
• MS-DRG 639 - Diabetes without CC/MCC
**🔗 Related ICD-10 Codes:**
• [E10.9 - Type 1 diabetes mellitus without complications](/icd10-lookup/type-1-diabetes-mellitus-without-complications)
**💡 Coding Tips:**
• Ensure to document any complications or manifestations for more specific coding.
• Use additional codes to identify insulin use (Z79.4) if applicable.
**🚫 Common Errors to Avoid:**
• Avoid using non-billable parent code E11.
• Ensure accurate documentation of any complications.
**💰 Reimbursement Considerations:**
• CMS reimbursement may vary based on documented complications.
• Prior authorization is generally not required for diabetes diagnosis coding, but check payer-specific guidelines.
**📅 Code History (Expert Validated)**
• 2025 (effective 10/1/2024): No change
• 2024 (effective 10/1/2023): No change
• 2023 (effective 10/1/2022): No change
**📋 Official Code Annotations:**
• Excludes1: diabetes mellitus due to underlying condition (E08.-), drug or chemical induced diabetes mellitus (E09.-)
• Excludes2: gestational diabetes (O24.4-)
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**⚠️ Important Notice:** Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes. Always verify billable status and use the most specific code available. Non-billable parent codes cannot be used for claim submission.