E10.3599 — Type 1 diabetes mellitus with proliferative diabetic retinopathy without macular edema, unspecified eye
Is E10.3599 billable?
Yes, but E10.3599 is an unspecified code. E10.3599 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, E10.3599 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 E10.3599.
E10.3599 at a glance
| Code | E10.3599 |
|---|---|
| Description | Type 1 diabetes mellitus with proliferative 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 E10.3599?
In E10.3599, the 7th character 9 means unspecified eye. The 7th character is required for E10.3599 to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does E10.3599 group to?
E10.3599 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 E10.3599 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under E10.359, the nearest indexed parent of E10.3599. Use them to find the family, then select the specific code.
- Diabetes, diabetic › type 1 › with › retinopathy › proliferative (mellitus) (sugar)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E10.3599 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 E10
The conditions below can never be reported together with E10.3599 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 underlying condition (E08.-)
- drug or chemical induced diabetes mellitus (E09.-)
- gestational diabetes (O24.4-)
- hyperglycemia NOS (R73.9)
- neonatal diabetes mellitus (P70.2)
- postpancreatectomy diabetes mellitus (E13.-)
- postprocedural diabetes mellitus (E13.-)
- secondary diabetes mellitus NEC (E13.-)
- type 2 diabetes mellitus (E11.-)
How long has E10.3599 existed?
E10.3599 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.