K27

Non-Billable

ChapterK00–K95

Rankcategory

Official Description

Peptic ulcer, site unspecified

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 11: Diseases of the Digestive System (K00-K95).

CH11 Parent Instructions

Excludes2(Not included here)

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)

K20-K31 Parent Instructions

Excludes2(Not included here)

hiatus hernia (K44.-)

Instructional Notes

Includes

gastroduodenal ulcer NOS
peptic ulcer NOS

Excludes1(Not coded here)

peptic ulcer of newborn (P78.82)

Use Additional Code

code to identify:
alcohol abuse and dependence (F10.-)

Clinical Hierarchy

CH11Diseases of the digestive system (K00-K95)

K20-K31Diseases of esophagus, stomach and duodenum (K20-K31)

K27Peptic ulcer, site unspecified

K27.0Acute peptic ulcer, site unspecified, with hemorrhage

K27.1Acute peptic ulcer, site unspecified, with perforation

K27.2Acute peptic ulcer, site unspecified, with both hemorrhage and perforation

K27.3Acute peptic ulcer, site unspecified, without hemorrhage or perforation

K27.4Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage

K27.5Chronic or unspecified peptic ulcer, site unspecified, with perforation

K27.6Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation

K27.7Chronic peptic ulcer, site unspecified, without hemorrhage or perforation

K27.9Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K27:

blockK20-K31

Diseases of esophagus, stomach and duodenum (K20-K31)

View context instructions

chapterCH11

Diseases of the digestive system (K00-K95)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to K27. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

18 raw paths

Hematemesis1 unique routes

with ulcer - code by site under Ulcer, with hemorrhage→K27

Hemorrhage, hemorrhagic (concealed)1 unique routes

ulcer - code by site under Ulcer, with hemorrhage→K27

Lesion (s) (nontraumatic)1 unique routes

peptic→K27

Melena1 unique routes

with ulcer - code by site under Ulcer, with hemorrhage→K27

Ulcer, ulcerated, ulcerating, ulceration, ulcerative14 unique routes

bleeding→K27

peptic (site unspecified)→K27(12 variants)