ICD-10 Code K68 – Disorders of Retroperitoneum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K68 – Disorders of retroperitoneum
What it is
K68 identifies disorders affecting the retroperitoneum, the space behind the abdominal lining. Use it for documented retroperitoneal conditions when a more specific diagnosis is not available.
Clinical signs
Clinical features vary; refer to documentation. Findings may include abdominal or flank pain, a palpable mass, or imaging evidence of retroperitoneal abnormality.
When to use this code
Use K68 when the record states a disorder of the retroperitoneum without naming a more specific condition. It may also fit when imaging or operative notes identify retroperitoneal disease and the provider documents it as such. Check documentation for the exact diagnosis.
Do not use for
Do not use K68 for diseases that are clearly coded elsewhere, such as specific neoplasms, infections, or organ-based abdominal conditions. If the chart names a precise retroperitoneal disorder, code that diagnosis instead.
Coding tip
Review the provider’s wording carefully; K68 is a broad fallback code, so specificity in the note may support a more exact code.