Is E10.33 a billable ICD-10-CM code?

No. E10.33 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E10.33 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).

What cannot be coded together with E10.33?

E10.33 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E10.33 (E10) and apply to it just the same.

E10.33

E10.33 — Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy

Non-billable headerICD-10-CM

E10.33 is a non-billable header ICD-10-CM code for type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

One of the following 7th characters is to be assigned to codes in subcategory E10.33 to designate laterality of the disease:

1: right eye
2: left eye
3: bilateral
9: unspecified eye

Excludes1 inherited from the categories above E10.33

These are not written on E10.33, but they bind it: a note on a category applies to every code beneath it. Billing E10.33 with anything listed here is a denial.

Written on E10 — Type 1 diabetes mellitus

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.-)

Other codes that can never be billed with E10.33

These codes carry an Excludes1 note pointing at E10.33. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E10.33 alone.

E11Type 2 diabetes mellitus
E13Other specified diabetes mellitus
Q45.3Other congenital malformations of pancreas and pancreatic duct
E09Drug or chemical induced diabetes mellitus
E08Diabetes mellitus due to underlying condition

Risk adjustment

E10.33 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

E10.33 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead E10.33

2 child codes. Green means billable.

Related codes at this level

Codes that share E10.3. If E10.33 is not quite right, the correct code is usually one of these.

Questions about E10.33

Is E10.33 a billable ICD-10-CM code?: No. E10.33 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E10.33 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).
What cannot be coded together with E10.33?: E10.33 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E10.33 (E10) and apply to it just the same.