Question: Encounter notes indicate that a patient suffered from nontraumatic compartment syndrome. How should I choose an ICD-10 code for this condition, and what is compartment syndrome? Minnesota Subscriber Answer: It depends on whether the locality of the condition. Go back and check the notes for the anatomical location of the compartment syndrome. Then, choose one of the following ICD-10 codes: More on condition: “Nontraumatic compartment syndrome refers to a painful condition characterized by increased pressure due to swelling within a compartment that is caused by nontraumatic factors such as hemorrhage, leading to a reduction in circulation,” according to Codify.