K08.20 — Unspecified atrophy of edentulous alveolar ridge
Is K08.20 billable?
Yes, but K08.20 is an unspecified code. K08.20 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, K08.20 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 K08.20 — the more specific alternatives are listed below.
K08.20 at a glance
| Code | K08.20 |
|---|---|
| Description | Unspecified atrophy of edentulous alveolar ridge |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does K08.20 group to?
K08.20 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 K08.20 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to K08.20. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Atrophy, atrophic › alveolar process or ridge (of)
- Atrophy, atrophic › edentulous alveolar ridge (of)
- Atrophy, atrophic › mandible (of)
- Atrophy, atrophic › maxilla (of)
Inclusion terms
Alternative wording in documentation that is classified to K08.20.
- Atrophy of the mandible NOS
- Atrophy of the maxilla NOS
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K08.20, but a patient may have both at the same time. When documentation supports it, K08.20 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)
Excludes2 — not included here — inherited from K08
The conditions below are not part of K08.20, but a patient may have both at the same time. When documentation supports it, K08.20 and the excluded code may both be reported.
How long has K08.20 existed?
K08.20 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.