K04.1 Necrosis of pulp

Billable ICD-10-CM code, FY2026.

Applicable to

• Pulpal gangrene

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 522.1 Necrosis of the pulp

Diagnosis Index entries for K04.1

• Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) › pulpal (dental)
• Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer) › tooth (pulp)
• Necrosis, necrotic (ischemic) › dental pulp
• Necrosis, necrotic (ischemic) › pulp (dental)
• Putrescent pulp (dental)

Nearby codes

• K04 Diseases of pulp and periapical tissues
• K04.0 Pulpitis
• K04.01 Reversible pulpitis
• K04.02 Irreversible pulpitis
• K04.1 Necrosis of pulp (this code)
• K04.2 Pulp degeneration
• K04.3 Abnormal hard tissue formation in pulp
• K04.4 Acute apical periodontitis of pulpal origin
• K04.5 Chronic apical periodontitis
• K04.6 Periapical abscess with sinus