K05.229 — Aggressive periodontitis, generalized, unspecified severity
Is K05.229 billable?
Yes, but K05.229 is an unspecified code. K05.229 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, K05.229 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting K05.229 — the more specific alternatives are listed below.
K05.229 at a glance
| Code | K05.229 |
|---|---|
| Description | Aggressive periodontitis, generalized, unspecified severity |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K05.229 group to?
K05.229 sits in MDC Pre and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
- 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
- 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical
How is K05.229 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K05.229. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Periodontitis › acute › generalized (chronic) (complex) (compound) (local) (simplex)
- Periodontitis › aggressive › generalized (chronic) (complex) (compound) (local) (simplex)
- Abscess › gingival › aggressive › generalized (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
- Abscess › gum › aggressive › generalized (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
Excludes1 — never code together — inherited from K05.2
The conditions below can never be reported together with K05.229 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from K05
Report an additional code alongside K05.229 to fully describe the condition. K05.229 is sequenced first.
- 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)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K05.229, but a patient may have both at the same time. When documentation supports it, K05.229 and the excluded code may both be reported.
- 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)
How long has K05.229 existed?
K05.229 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.