Necrosis of the pulp

This code signifies the death of the dental pulp tissue, which is the soft tissue within the tooth containing nerves, blood vessels, and connective tissue. This condition is often a consequence of severe inflammation (pulpitis), trauma, or extensive dental caries that have reached the pulp chamber. Untreated, it can lead to periapical infection and abscess formation.

Use this code when the clinical documentation clearly indicates irreversible pulp damage leading to tissue death. This diagnosis is typically supported by findings such as lack of response to vitality tests, discoloration of the tooth, radiographic evidence of periapical radiolucency, or a history of severe, persistent toothache that has since subsided.

• Differentiate from reversible or irreversible pulpitis; this code specifically indicates necrosis.
• Ensure documentation specifies "necrosis" or "non-vital pulp" rather than just "pulpitis."
• Consider sequencing with codes for the underlying cause, such as dental caries (e.g., 521.0x) or trauma, if applicable.