H10.21
Non-billableAcute toxic conjunctivitis
H10.21 is the ICD-10-CM code for Acute toxic conjunctivitis. It is a non-billable category code — use a more specific child code such as H10.211 for billing.
H00-H59 Diseases of the eye and adnexa
Includes
- •Acute chemical conjunctivitis
Excludes1 — not coded here
- •burn and corrosion of eye and adnexa (T26.-)
Frequently asked questions
- What is ICD-10 code H10.21?
- H10.21 is the ICD-10-CM code for "Acute toxic conjunctivitis". It falls under H00-H59 Diseases of the eye and adnexa.
- Is H10.21 a billable code?
- No — H10.21 is a non-billable header code. Use a more specific child code (such as H10.211) for billing.
- What are the subcodes of H10.21?
- H10.21 has 4 more specific child codes, including H10.211, H10.212, H10.213.
- What is excluded from H10.21?
- Excludes1 (not coded here): burn and corrosion of eye and adnexa (T26.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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