K09.1
Developmental (nonodontogenic) cysts of oral region
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
K00-K95chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 8
Index entries leading here 1
- Cyst (colloid) (mucous) (simple) (retention)
- anterior
- nasopalatine K09.1
- median
- bone (local) NEC M85.60
- developmental K09.1
- oral region (nonodontogenic) K09.1
- fissural (oral region) K09.1
- globulomaxillary K09.1
- incisive canal K09.1
- jaw (bone) M27.40
- fissural K09.1
- nasoalveolar K09.1
- nasolabial K09.1
- nasopalatine (anterior) (duct) K09.1
- oral
- palate (median) (fissural) K09.1
- palatine papilla (jaw) K09.1
- anterior
Alongside this code 3 same parent — K09
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.