H40.03
⚠ Non-billable
Anatomical narrow angle
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H40.03
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code H40.03?
ICD-10-CM code H40.03 represents Anatomical narrow angle. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H40.03 billable?
No. H40.03 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is H40.03 in?
H40.03 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H40 category
H40
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H40.0
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H40.1
Open-angle glaucoma
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H40.2
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H40.3
Glaucoma secondary to eye trauma
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H40.4
Glaucoma secondary to eye inflammation
Non-billable
H40.5
Glaucoma secondary to other eye disorders
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H40.6
Glaucoma secondary to drugs
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