K27
ICD-10Non-billable categoryPeptic ulcer, site unspecified
Official ICD-10-CM descriptor (FY2026)
Peptic ulcer, site unspecified
K27 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- gastroduodenal ulcer NOS
- peptic ulcer NOS
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- peptic ulcer of newborn (P78.82)
Use additional code
Report an additional code to identify the associated condition.
- code to identify:
- alcohol abuse and dependence (F10.-)
More specific codes under K27
- K27.0Acute peptic ulcer, site unspecified, with hemorrhage
- K27.1Acute peptic ulcer, site unspecified, with perforation
- K27.2Acute peptic ulcer, site unsp, w both hemorrhage and perf
- K27.3Acute peptic ulcer, site unsp, w/o hemorrhage or perforation
- K27.4Chronic or unsp peptic ulcer, site unsp, with hemorrhage
- K27.5Chronic or unsp peptic ulcer, site unsp, with perforation
- K27.6Chr or unsp peptic ulcer, site unsp, w both hemor and perf
- K27.7Chronic peptic ulcer, site unsp, w/o hemorrhage or perf
- K27.9Peptic ulc, site unsp, unsp as ac or chr, w/o hemor or perf
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.