H11.42Header code — not billable
Conjunctival edema
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H11
- Effective date
- October 1, 2026
Related codes in category H11
H11Other disorders of conjunctivaH11.0Pterygium of eyeH11.00Unspecified pterygium of eyeH11.001Unspecified pterygium of right eyeYesH11.002Unspecified pterygium of left eyeYesH11.003Unspecified pterygium of eye, bilateralYesH11.009Unspecified pterygium of unspecified eyeYesH11.01Amyloid pterygiumH11.011Amyloid pterygium of right eyeYesH11.012Amyloid pterygium of left eyeYesH11.013Amyloid pterygium of eye, bilateralYesH11.019Amyloid pterygium of unspecified eyeYes
Frequently asked questions
What is ICD-10 code H11.42?
H11.42 is an ICD-10-CM diagnosis code for Conjunctival edema.
Is H11.42 a billable code?
No. H11.42 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is H11.42 in?
H11.42 falls under Chapter 7: Diseases of the eye and adnexa.
When did H11.42 become effective?
H11.42 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H11.42?
H11.42 belongs to category H11, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.