ICD-10-CM 2027
ICD-10 code for Parodontal disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › parodontal”. Page updated September 29, 2026.
About coding Parodontal disease
The ICD-10-CM code for Parodontal disease is K05.6 (Periodontal disease, unspecified).
Within K05, choose K05.6 (Periodontal disease, unspecified) only when documentation doesn't support a more specific option: acute gingivitis (K05.0), chronic gingivitis (K05.1), aggressive periodontitis (K05.2), chronic periodontitis (K05.3), Periodontosis (K05.4) and other periodontal diseases (K05.5).
Use an additional code to identify: alcohol abuse and dependence (F10.-), exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31) and 2 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about Parodontal disease ICD-10 codes
What is the ICD-10 code for Parodontal disease?
- K05.6 — Periodontal disease, unspecified.
Is K05.6 billable?
- Yes. K05.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K05.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K05.6 as a principal diagnosis.
Is K05.6 a CC or MCC?
- No. K05.6 is neither a CC nor an MCC under MS-DRG v44.0.