H40.9 ICD-10-CM Code: Unspecified glaucoma
H40.9 is the billable ICD-10-CM code for “Unspecified glaucoma” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
H40.9Unspecified glaucoma
ICD-10-CM diagnosis code · United States clinical modification
More specific than H40.9
View categoryH40.9 is an unspecified code, for when the note doesn’t say more. If it documents the type, cause, or site, one of these codes may fit better.
Where H40.9 sits
- 1
Chapter 7
Diseases of the eye and adnexa (H00-H59)
- 2
Section
Glaucoma (H40-H42)
- 3
Category H40
Glaucoma
- 4
Code H40.9
Unspecified glaucoma
Notes for this code
Inclusion terms
No inclusion terms are listed for H40.9.
Code first
No “code first” instruction is listed for H40.9.
Use additional code
No “use additional code” instruction is listed for H40.9.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for H40.9.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for H40.9.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code H40.9 mean?
H40.9 is the FY 2027 U.S. ICD-10-CM code for “Unspecified glaucoma.”
Is H40.9 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, H40.9 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is H40.9 located in ICD-10-CM?
H40.9 is listed in Chapter 7, Diseases of the eye and adnexa (H00-H59), within Glaucoma (H40-H42) (H40–H42), under category H40, Glaucoma.
What coding notes are listed for H40.9?
No inclusion terms are listed for H40.9 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.