Question: How should I code a diagnosis of chronic nasal bleeding following sinus surgery? Florida Subscriber Answer: As long as the provider clearly documents the epistaxis as a complication of the surgical procedure, you should not consider reporting code R04.0 (Epistaxis) as the primary diagnosis. Since this is a postsurgical complication, your primary ICD-10-CM code should describe as much. In this example, you will use the ICD-10-CM index to find Complication ⇒ postprocedural ⇒ hemorrhage (of) ⇒ respiratory system which leads you to code J95.830 (Postprocedural hemorrhage of a respiratory system organ or structure following a respiratory system procedure). However, you should not stop there. Consider the following instructions listed in Section I.C.19.g of the ICD-10-CM guidelines: This means that, when applicable, you should code the specific complication as a secondary diagnosis. In this case, you may report R04.0 in addition to J95.830.