E13.3299 — Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema, unspecified eye
Is E13.3299 billable?
Yes, but E13.3299 is an unspecified code. E13.3299 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, E13.3299 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting E13.3299.
E13.3299 at a glance
| Code | E13.3299 |
|---|---|
| Description | Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema, unspecified eye |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "9" | unspecified eye |
What does the 7th character "9" mean in E13.3299?
In E13.3299, the 7th character 9 means unspecified eye. The 7th character is required for E13.3299 to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does E13.3299 group to?
E13.3299 sits in MDC Pre and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 008Simultaneous Pancreas, Islet Cell and Kidney Transplantsurgical
How is E13.3299 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under E13.329, the nearest indexed parent of E13.3299. Use them to find the family, then select the specific code.
- Diabetes, diabetic › specified type NEC › with › retinopathy › nonproliferative (mellitus) (sugar)
- Diabetes, diabetic › specified type NEC › with › retinopathy › nonproliferative › mild (mellitus) (sugar)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E13.3299 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Excludes1 — never code together — inherited from E13
The conditions below can never be reported together with E13.3299 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- 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 — inherited from E13
Report an additional code alongside E13.3299 to fully describe the condition. E13.3299 is sequenced first.
How long has E13.3299 existed?
E13.3299 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.