K04.90 Unspecified diseases of pulp and periapical tissues

Billable ICD-10-CM code, FY2026.

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 522.9 Other and unspecified diseases of pulp and periapical tissues (approximate)

Diagnosis Index entries for K04.90

• Disease, diseased › periapical tissues NOS
• Disease, diseased › pulp (dental) NOS

Nearby codes

• K04.5 Chronic apical periodontitis
• K04.6 Periapical abscess with sinus
• K04.7 Periapical abscess without sinus
• K04.8 Radicular cyst
• K04.9 Other and unspecified diseases of pulp and periapical tissues
• K04.90 Unspecified diseases of pulp and periapical tissues (this code)
• K04.99 Other diseases of pulp and periapical tissues