Disorders of retroperitoneum (K68) ICD-10-CM
The K68 code range covers disorders of retroperitoneum with 8 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the K68 Range 8 codes · 6 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K68 range.
Retroperitoneal Fibrosis
A slowly progressive condition of unknown etiology, characterized by deposition of fibrous tissue in the retroperitoneal space compressing the ureters, great vessels, bile duct, and other structures. When associated with abdominal aortic aneurysm, it may be called chronic periaortitis or inflammatory perianeurysmal fibrosis.
About the K68 Code Range
Disorders of the retroperitoneum are captured under the ICD-10 code K68 and include a variety of conditions affecting the space behind the abdominal cavity. These codes are used to identify specific problems like abscesses, fibrosis, hematomas, and other less common retroperitoneal disorders, helping healthcare providers pinpoint exact diagnoses for treatment and documentation.
The ICD-10 code for retroperitoneal abscess (K68.1) covers infections in this area, with subcodes such as K68.11 for postprocedural retroperitoneal abscess and K68.12 for psoas muscle abscess, also known as iliopsoas abscess or muscle abscess of the thigh and hip. Other retroperitoneal abscesses fall under K68.19. Retroperitoneal fibrosis (K68.2) describes thickening and scarring of retroperitoneal tissue. Hematomas in this region, either traumatic or nontraumatic, are coded as K68.3. The code K68.9 is reserved for other retroperitoneal disorders like pneumoretroperitoneum, retroperitoneal cysts, or fat necrosis. Understanding these codes helps medical coders and clinicians accurately represent the nature and source of retroperitoneal conditions in medical records and billing.
Questions About This Page
How many billable codes are in the K68 range?
Of the 8 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the K68 range classify?
The range classifies disorders of retroperitoneum. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
