N30.9
Header — not billableCystitis, unspecified
The ICD-10 code for cystitis, unspecified is N30.9.
N30.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 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.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under N30.9
Related codes in this category
- N30.0Acute cystitisnon-billable header
- N30.1Interstitial cystitis (chronic)non-billable header
- N30.2Other chronic cystitisnon-billable header
- N30.3Trigonitisnon-billable header
- N30.4Irradiation cystitisnon-billable header
- N30.8Other cystitisnon-billable header
- N30.9Cystitis, unspecifiednon-billable header