Is H21.543 a billable code?
Yes. H21.543 is a billable ICD-10-CM code and can be used on claims and superbills for dates of service from October 1, 2026 to September 30, 2027.
ICD-10-CM FY2027 diagnosis code
H21.543: Posterior synechiae (iris), bilateral
Billable codeValid for dates of service October 1, 2026 to September 30, 2027
H21.543 is a billable ICD-10-CM diagnosis code for posterior synechiae (iris), bilateral. It is specific enough to use on an insurance claim, a superbill or a Good Faith Estimate.
Superbill GeneratorStart a superbill with H21.543 already added.Good Faith EstimateStart a cost estimate with H21.543 already added.CMS-1500 Claim FormFill a claim form with H21.543 in box 21.
Other codes in H21.54 Posterior synechiae (iris)
H21.543 questions
What does H21.543 mean?
H21.543 is the ICD-10-CM code for Posterior synechiae (iris), bilateral. It is in chapter 7, Diseases of the eye and adnexa (H00-H59).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.