H40.40X3 vs P15.3

H40.40X3 (Glaucoma secondary to eye inflammation, unspecified eye, severe stage) compared with P15.3 (Birth injury to eye), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

H40.40X3

Glaucoma secondary to eye inflammation, unspecified eye, severe stage

↔

P15.3

Birth injury to eye

Not coded here — these two are mutually exclusive.

“traumatic glaucoma due to birth injury (P15.3)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Can these codes be reported together?

No — do not report together. H40.40X3 carries an Excludes1 note covering P15.3: “traumatic glaucoma due to birth injury (P15.3)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

	H40.40X3Glaucoma secondary to eye inflammation, unspecified eye, severe stage	P15.3Birth injury to eye
Billing status	Billable	Billable
Classification	H00-H59 — Diseases of the Eye and Adnexa (H00-H59)	P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96)
Definition	Glaucoma secondary to eye inflammation, unspecified eye, severe stage is a billable ICD-10-CM diagnosis code (H40.403).	Birth injury to eye is a billable ICD-10-CM diagnosis code (P15.3).
7th character	One of the following 7th characters is to be assigned to each code in subcategory H40.4 to designate the stage of glaucoma	—
Includes	—	Subconjunctival hemorrhage due to birth injury Traumatic glaucoma due to birth injury

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources