Periapical abscess without sinus

This code represents an acute or chronic infection of the tissues surrounding the apex of a tooth root, characterized by the formation of pus. It specifically indicates that there is no draining sinus tract present, meaning the infection is contained within the periapical tissues. This condition typically results from pulpal necrosis due to caries, trauma, or failed endodontic treatment.

Use this code when documentation clearly indicates a periapical abscess without an associated sinus tract. This diagnosis is often supported by clinical findings such as localized pain, swelling, tenderness to percussion, and radiographic evidence of a periapical radiolucency. It is appropriate for both acute and chronic presentations where no drainage pathway has formed.

• Differentiate from periapical abscess with sinus, which has a distinct code.
• Ensure documentation specifies the absence of a sinus tract; otherwise, a more general or unspecified code may be necessary.
• Consider sequencing this code with codes for the underlying cause, such as dental caries (K02.-) or pulpal necrosis (K04.1), if documented.