ICD-10-CM
ICD-10 code for Odontomyelitis (closed) (open): K04.01
The ICD-10-CM index points "Odontomyelitis (closed) (open)" to K04.01, Reversible pulpitis. K04.01 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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