H21.333: Parasitic cyst of iris, ciliary body or ant chamber, bi
Parasitic cyst of iris, ciliary body or anterior chamber, bilateral
Quick Clinical & Billing Summary
What is ICD-10-CM code H21.333? H21.333 represents Parasitic cyst of iris, ciliary body or ant chamber, bi. Under official CDC guidelines, this code is billable and specific for claim submission.
Code Hierarchy & Classification
Clinical Guidance & Documentation Standards
Associated Procedures & Medicare RVU Reimbursement
Open RVU Calculator →Typical outpatient and office evaluation procedures frequently billed alongside diagnosis H21.333:
| CPT/HCPCS | Description | Work RVU | Non-Facility Fee | Facility Fee |
|---|---|---|---|---|
| 99213 | Office/outpatient visit, established patient, 20-29 minutes (Low MDM) | 1.30 | $91.69 | $66.79 |
| 99214 | Office/outpatient visit, established patient, 30-39 minutes (Moderate MDM) | 1.92 | $133.61 | $100.21 |
| 96372 | Therapeutic, prophylactic, or diagnostic injection (subcutaneous/intramuscular) | 0.17 | $18.34 | $12.44 |
CPT Modifier & Billing Rules
Append when a significant, separately identifiable evaluation and management service is provided on the same calendar day as a minor surgical procedure or injection.
Identifies procedures or services not normally reported together but distinct under the clinical circumstances. Use CMS X-modifiers (XE, XS, XP, XU) where required by Medicare.
Frequently Asked Questions about H21.333
Is H21.333 a billable ICD-10 code?
Yes, H21.333 is a valid, billable and specific ICD-10-CM code. It can be reported as a primary or secondary diagnosis on medical claims.
What is the ICD-10 code for Parasitic cyst of iris, ciliary body or ant chamber, bi?
The primary ICD-10-CM code for Parasitic cyst of iris, ciliary body or ant chamber, bi is H21.333.
What is the effective date of the current H21.333 code?
The code is active for fiscal year FY2027, effective starting 2026-10-01.
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