Injury of olfactory nerve, unspecified side, subs encntr

This code signifies a documented injury to the olfactory nerve, which is responsible for the sense of smell, where the specific side of the injury is not specified. This particular code is used for follow-up care, indicating that the initial treatment for the injury has already been provided.

Use this code for patients presenting for ongoing management, evaluation, or treatment of an olfactory nerve injury after the initial encounter. Documentation should clearly indicate a previous diagnosis of olfactory nerve injury and that the current visit is for subsequent care, such as monitoring recovery or managing persistent anosmia.

• Ensure documentation specifies "subsequent encounter" to justify the 7th character 'D'.
• If the side of the injury is known, a more specific code (e.g., S04.811D for right, S04.812D for left) should be used.
• Distinguish from initial encounters (A) or sequela (S) for the same injury.