ICD-10-CM 7th Character Values · FY 2027 4 Values

7th Character Values: Eye Laterality ICD-10-CM

Identifies the affected eye for diabetic retinopathy and related eye conditions: 1 right eye, 2 left eye, 3 bilateral, 9 unspecified eye. In FY 2027 25 categories use this set, covering 260 complete codes.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A

Values

What Each Value Means 4 values

Character	Meaning
1	right eye
2	left eye
3	bilateral
9	unspecified eye

ICD-10-CM

Categories That Use These Values 25 categories

25 of 25 shown

Category	Title	Chapter	Codes
E08.32	Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy	Ch. 4	8
E08.33	Diabetes mellitus due to underlying condition with moderate nonproliferative diabetic retinopathy	Ch. 4	8
E08.34	Diabetes mellitus due to underlying condition with severe nonproliferative diabetic retinopathy	Ch. 4	8
E08.35	Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy	Ch. 4	24
E08.37	Diabetes mellitus due to underlying condition with diabetic macular edema, resolved following treatment	Ch. 4	4
E09.32	Drug or chemical induced diabetes mellitus with mild nonproliferative diabetic retinopathy	Ch. 4	8
E09.33	Drug or chemical induced diabetes mellitus with moderate nonproliferative diabetic retinopathy	Ch. 4	8
E09.34	Drug or chemical induced diabetes mellitus with severe nonproliferative diabetic retinopathy	Ch. 4	8
E09.35	Drug or chemical induced diabetes mellitus with proliferative diabetic retinopathy	Ch. 4	24
E09.37	Drug or chemical induced diabetes mellitus with diabetic macular edema, resolved following treatment	Ch. 4	4
E10.32	Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy	Ch. 4	8
E10.33	Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy	Ch. 4	8
E10.34	Type 1 diabetes mellitus with severe nonproliferative diabetic retinopathy	Ch. 4	8
E10.35	Type 1 diabetes mellitus with proliferative diabetic retinopathy	Ch. 4	24
E10.37	Type 1 diabetes mellitus with diabetic macular edema, resolved following treatment	Ch. 4	4
E11.32	Type 2 diabetes mellitus with mild nonproliferative diabetic retinopathy	Ch. 4	8
E11.33	Type 2 diabetes mellitus with moderate nonproliferative diabetic retinopathy	Ch. 4	8
E11.34	Type 2 diabetes mellitus with severe nonproliferative diabetic retinopathy	Ch. 4	8
E11.35	Type 2 diabetes mellitus with proliferative diabetic retinopathy	Ch. 4	24
E11.37	Type 2 diabetes mellitus with diabetic macular edema, resolved following treatment	Ch. 4	4
E13.32	Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy	Ch. 4	8
E13.33	Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy	Ch. 4	8
E13.34	Other specified diabetes mellitus with severe nonproliferative diabetic retinopathy	Ch. 4	8
E13.35	Other specified diabetes mellitus with proliferative diabetic retinopathy	Ch. 4	24
E13.37	Other specified diabetes mellitus with diabetic macular edema, resolved following treatment	Ch. 4	4

Every code under these categories takes one of the values above in the seventh position, with X placeholders when the code is shorter than six characters. For example, a code under E08.32 ends in 1 for right eye. “Codes” counts the complete 7-character codes.

Other 7th Character Value Sets

Encounter: Initial, Subsequent, Sequela Closed Fracture Encounter Fetus Identification Glaucoma Stage Pathological Fracture Encounter Open or Closed Fracture Encounter Coma Scale Timing Skull, Spine and Pelvis Fracture Encounter Open Fracture Type Encounter Retinal Vein Occlusion Status Vertebral Fracture Encounter Dry Macular Degeneration Stage Wet Macular Degeneration Stage Chronic Gout Tophus

Questions About These 7th Characters

What do the 7th characters 1, 2, 3, 9 mean?

In this set: 1 (right eye); 2 (left eye); 3 (bilateral); 9 (unspecified eye).

Which ICD-10-CM categories use the Eye Laterality 7th characters?

25 categories and subcategories use them in FY 2027, covering 260 codes. The table above lists each one with its chapter and code count.

What if the code is shorter than six characters?

Fill the empty positions with the placeholder X so the 7th character is in the seventh position. A code that requires a 7th character is invalid without it (Sections I.A.4 and I.A.5).

Related References

ICD-10-CM Official Guidelines ICD-10-CM Code Lookup ICD-10-CM Codes List Code Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.