ICD-10 Codes for Type 2 Diabetes Made Simple

Here are the codes you’ll see 80% of the time in primary care, urgent care, or endocrinology.

1. E11.9 – Type 2 Diabetes Without Complications

• When to use: Routine visits (e.g., “Patient here for A1C check, no complications”).
• Example: Smith’s quarterly diabetes follow-up.

2. E11.65 – Type 2 Diabetes with Hyperglycemia

• When to use:Blood sugar is high and documented (e.g., glucose >200 mg/dL).
• Real-life tip: If the provider writes “uncontrolled,” use this code!

3. E11.21 – Type 2 Diabetes with Neuropathy

• When to use: Patient complains of tingling/numbness in feet.
• Audit-proofing: Link to notes like “diabetic neuropathy” or “burning pain.”

4. E11.22 – Type 2 Diabetes with CKD

• When to use: Labs show kidney damage (e.g., eGFR <60 or proteinuria).
• Coding combo: Pair with N18.6 (CKD stage 3) if documented.

5. E11.349 – Diabetes with Eye Damage

• When to use:

  Retinopathy notes (e.g., “no proliferative retinopathy”).

• Don’t forget: Add an eye exam code (like 92250) if performed.

6. E11.641 – Type 2 Diabetes with Hypoglycemia

• When to use: Patient had a low blood sugar episode (<70 mg/dL).
• Example: “Patient experienced shakiness after insulin dose.”

7. O24.439 – Diabetes in Pregnancy

• When to use: Pregnant patients with type 2 diabetes (any trimester).
• Critical add-on: Include a Z3A.XX code for gestational week (e.g., Z3A.12 = 12 weeks).

8. E11.8 – Diabetes with Unspecified Complications

• When to use: Only if the provider is vague (e.g., “diabetes with complications”).
• Try to avoid: Always ask for clarification to code specifics!

9. E78.5 – Hyperlipidemia & I10 – Hypertension

• Why this matters:75% of diabetics have high cholesterol or BP.
• Coding combo + I10 + E78.5 = Perfect for annual physicals.

10. R73.09 – Abnormal Blood Glucose (Prediabetes)

• When to use: Borderline labs (e.g., fasting glucose 100-125 mg/dL).
• Not a diabetes code: Use this if the provider hasn’t officially diagnosed diabetes yet.