K04.4
K04.4: Acute apical periodontitis of pulpal origin
Billable / specific codeICD-10-CM
K04.4 is a billable, specific ICD-10-CM code for acute apical periodontitis of pulpal origin. It is valid for submission on a claim.
Check K04.4 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- acute periodontitis (K05.2-)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Acute apical periodontitis NOS
Other codes that can never be billed with K04.4
Their own Excludes1 notes name this code, so the conflict is not listed above.
- K05.2Aggressive periodontitis
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Septic›teeth, tooth(pulpal origin)
- Periodontitis›apical›acute(pulpal origin)
Code history
Unchanged in every release from FY2024 to FY2027.