H33.121Billable
Parasitic cyst of retina, right eye
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H33
- Effective date
- October 1, 2026
Related codes in category H33
H33Retinal detachments and breaksH33.0Retinal detachment with retinal breakH33.00Unspecified retinal detachment with retinal breakH33.001Unspecified retinal detachment with retinal break, right eyeYesH33.002Unspecified retinal detachment with retinal break, left eyeYesH33.003Unspecified retinal detachment with retinal break, bilateralYesH33.009Unsp retinal detachment with retinal break, unspecified eyeYesH33.01Retinal detachment with single breakH33.011Retinal detachment with single break, right eyeYesH33.012Retinal detachment with single break, left eyeYesH33.013Retinal detachment with single break, bilateralYesH33.019Retinal detachment with single break, unspecified eyeYes
Frequently asked questions
What is ICD-10 code H33.121?
H33.121 is an ICD-10-CM diagnosis code for Parasitic cyst of retina, right eye.
Is H33.121 a billable code?
Yes. H33.121 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is H33.121 in?
H33.121 falls under Chapter 7: Diseases of the eye and adnexa.
When did H33.121 become effective?
H33.121 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H33.121?
H33.121 belongs to category H33, 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.