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ICD-10 Coding for Diabetes Mellitus(E11.9, E11.22)

Complete ICD-10-CM coding and documentation guide for Diabetes Mellitus. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Diabetes Type 1Diabetes Type 2T1DMT2DM

Related ICD-10 Code Ranges

Complete code families applicable to Diabetes Mellitus

E08-E13Primary Range

Diabetes mellitus

This range includes all types of diabetes mellitus, including type 1, type 2, and secondary diabetes.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
E11.9Type 2 diabetes mellitus without complicationsUse when type 2 diabetes is documented without any complications.
  • HbA1c ≥6.5%
  • Fasting glucose ≥126 mg/dL
E11.22Type 2 diabetes mellitus with diabetic chronic kidney diseaseUse when type 2 diabetes is documented with chronic kidney disease.
  • Diagnosis of CKD stage 1-5 or ESRD
  • HbA1c ≥6.5%

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for type 2 diabetes

Essential facts and insights about Diabetes Mellitus

Type 2 diabetes is coded as E11.9 without complications and E11.22 with CKD.

Primary ICD-10-CM Codes for diabetes type inspiration

Type 2 diabetes mellitus without complications
Billable Code

Decision Criteria

clinical Criteria

  • Patient diagnosed with type 2 diabetes without complications.

Applicable To

  • Type 2 diabetes mellitus

Excludes

  • Type 1 diabetes mellitus (E10.-)

Clinical Validation Requirements

  • HbA1c ≥6.5%
  • Fasting glucose ≥126 mg/dL

Code-Specific Risks

  • Risk of undercoding if complications are present but not documented.

Coding Notes

  • Ensure to document the absence of complications clearly.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Long-term (current) use of insulin

Z79.4
Use when insulin is prescribed for type 2 diabetes.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Type 1 diabetes mellitus without complications

E10.9
Presence of autoantibodies and low C-peptide levels.

Type 2 diabetes mellitus with other diabetic kidney complication

E11.29
Other specified kidney complications not classified as CKD.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Diabetes Mellitus to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code E11.9.

Impact

Clinical: Ambiguous treatment plans., Regulatory: Potential audit flags., Financial: Inaccurate reimbursement.

Mitigation Strategy

Clarify glucose levels in notes., Use specific terms like 'uncontrolled hyperglycemia'.

Impact

Reimbursement: Potential loss of additional reimbursement for complications., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Review patient records for any documented complications and code accordingly.

Impact

Failure to code documented complications can lead to audit issues.

Mitigation Strategy

Regularly review and update coding practices.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Diabetes Mellitus, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Diabetes Mellitus

Use these documentation templates to ensure complete and accurate documentation for Diabetes Mellitus. These templates include all required elements for proper coding and billing.

Type 2 Diabetes with Complications

Specialty: Endocrinology

Required Elements

  • Diabetes type and control status
  • Complications and their severity
  • Treatment plan

Example Documentation

Patient with type 2 diabetes and CKD stage 3, HbA1c 8.5%, on insulin.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Diabetes uncontrolled.
Good Documentation Example
Type 2 diabetes mellitus with CKD stage 3, uncontrolled hyperglycemia (HbA1c 8.5%).
Explanation
Specifies type, complication, and control status for accurate coding.

Need help with ICD-10 coding for Diabetes Mellitus? Ask your questions below.

Ask about any ICD-10 CM code, or paste a medical note

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