ICD-10 Code for Periodontitis
Also indexed as (chronic) (complex) (compound) (local) (simplex)
The ICD-10-CM code for periodontitis is K05.30 — Chronic periodontitis, unspecified. This is the code the Alphabetic Index gives for periodontitis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
K05.30 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which periodontitis code should you use?
The Alphabetic Index lists 20 codes under Periodontitis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
Periodontitis acute
| generalized | K05.229 | Aggressive periodontitis, generalized, unspecified severity | |
| localized | K05.219 | Aggressive periodontitis, localized, unspecified severity | |
| generalized › moderate | K05.222 | Aggressive periodontitis, generalized, moderate | |
| generalized › severe | K05.223 | Aggressive periodontitis, generalized, severe | |
| generalized › slight | K05.221 | Aggressive periodontitis, generalized, slight | |
| localized › moderate | K05.212 | Aggressive periodontitis, localized, moderate | |
| localized › severe | K05.213 | Aggressive periodontitis, localized, severe | |
| localized › slight | K05.211 | Aggressive periodontitis, localized, slight |
Periodontitis aggressive
| generalized | K05.229 | Aggressive periodontitis, generalized, unspecified severity | |
| localized | K05.219 | Aggressive periodontitis, localized, unspecified severity | |
| generalized › moderate | K05.222 | Aggressive periodontitis, generalized, moderate | |
| generalized › severe | K05.223 | Aggressive periodontitis, generalized, severe | |
| generalized › slight | K05.221 | Aggressive periodontitis, generalized, slight | |
| localized › moderate | K05.212 | Aggressive periodontitis, localized, moderate | |
| localized › severe | K05.213 | Aggressive periodontitis, localized, severe | |
| localized › slight | K05.211 | Aggressive periodontitis, localized, slight |
Periodontitis apical
| acute | K04.4 | Acute apical periodontitis of pulpal origin |
Periodontitis generalized
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources