K51.9
Header — not billableUlcerative colitis, unspecified
The ICD-10 code for ulcerative colitis, unspecified is K51.9.
K51.9 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.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- K51.0Ulcerative (chronic) pancolitisnon-billable header
- K51.2Ulcerative (chronic) proctitisnon-billable header
- K51.3Ulcerative (chronic) rectosigmoiditisnon-billable header
- K51.4Inflammatory polyps of colonnon-billable header
- K51.5Left sided colitisnon-billable header
- K51.8Other ulcerative colitisnon-billable header
- K51.9Ulcerative colitis, unspecifiednon-billable header