K05.3
Chronic periodontitis
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
K05.3 is a non-billable ICD-10-CM code header for chronic periodontitis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are K05.30 Chronic periodontitis, unspecified; K05.31 Chronic periodontitis, localized and K05.32 Chronic periodontitis, generalized. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 8 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Inherited from K05 Gingivitis and periodontal diseases
- code to identify:
Excludes1
Not coded here. The listed conditions generally should not be reported together.
This code
- chronic apical periodontitis (K04.5)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Inclusion terms
Conditions classified to this code.
This code
- Chronic pericoronitis
- Complex periodontitis
- Periodontitis NOS
- Simplex periodontitis