N18
Header — not billableChronic kidney disease (CKD)
The ICD-10 code for chronic kidney disease (ckd) is N18.
N18 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 7 more specific codes below.
Clinical notes
Code first
This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.
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 represents a manifestation. Documentation should identify the underlying condition, which must be coded first.
- •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under N18
Related codes in this category
- N17Acute kidney failurenon-billable header
- N19Unspecified kidney failure
- N18Chronic kidney disease (CKD)non-billable header