ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 7 H00-H59 Diseases of the eye and adnexa /
H15-H22 Disorders of sclera, cornea, iris and ciliary body /
H21 Other disorders of iris and ciliary body
Billable ICD-10-CM Code H21.341
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H21.341
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Primary cyst of pars plana, right eye
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