H52.21
Header — not billableIrregular astigmatism
The ICD-10 code for irregular astigmatism is H52.21.
H52.21 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- H52.20Unspecified astigmatismnon-billable header
- H52.22Regular astigmatismnon-billable header
- H52.21Irregular astigmatismnon-billable header