ICD-10-CM 2027
ICD-10 code for peptic ulcer
Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation
From the official ICD-10-CM alphabetic index entry “Ulcer, ulcerated, ulcerating, ulceration, ulcerative › peptic (site unspecified)”. Page updated September 29, 2026.
About coding peptic ulcer
The ICD-10-CM code for peptic ulcer is K27.9 (Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation). The official index lists 14 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K27.9.
Within K27, choose K27.9 (unspecified as acute or chronic, without hemorrhage or perforation) only when documentation doesn't support a more specific option: acute peptic ulcer, site unspecified, with hemorrhage (K27.0), acute peptic ulcer, site unspecified, with perforation (K27.1), acute peptic ulcer, site unspecified, with both hemorrhage and perforation (K27.2), acute peptic ulcer, site unspecified, without hemorrhage or perforation (K27.3), chronic or unspecified peptic ulcer, site unspecified, with hemorrhage (K27.4), chronic or unspecified peptic ulcer, site unspecified, with perforation (K27.5), chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation (K27.6) and chronic peptic ulcer, site unspecified, without hemorrhage or perforation (K27.7).
Use an additional code to identify: alcohol abuse and dependence (F10.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific peptic ulcer codes (official index)
- with
- hemorrhage K27.4 — Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage
- and perforation K27.6 — Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation
- perforation K27.5 — Chronic or unspecified peptic ulcer, site unspecified, with perforation
- acute K27.3 — Acute peptic ulcer, site unspecified, without hemorrhage or perforation
- with
- hemorrhage K27.0 — Acute peptic ulcer, site unspecified, with hemorrhage
- and perforation K27.2 — Acute peptic ulcer, site unspecified, with both hemorrhage and perforation
- perforation K27.1 — Acute peptic ulcer, site unspecified, with perforation
- chronic K27.7 — Chronic peptic ulcer, site unspecified, without hemorrhage or perforation
- with
- hemorrhage K27.4 — Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage
- and perforation K27.6 — Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation
- perforation K27.5 — Chronic or unspecified peptic ulcer, site unspecified, with perforation
- esophagus K22.10 — Ulcer of esophagus without bleeding
- with bleeding K22.11 — Ulcer of esophagus with bleeding
- newborn P78.82 — Peptic ulcer of newborn
Common questions about peptic ulcer ICD-10 codes
What is the ICD-10 code for peptic ulcer?
- K27.9 — Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation. More specific codes apply when the documentation supports them: K27.4, K27.6, K27.5, K27.3 and others below.
What is the ICD-10 code for acute peptic ulcer?
- K27.3 — Acute peptic ulcer, site unspecified, without hemorrhage or perforation.
What is the ICD-10 code for chronic peptic ulcer?
- K27.7 — Chronic peptic ulcer, site unspecified, without hemorrhage or perforation.
What is the ICD-10 code for esophagus peptic ulcer?
- K22.10 — Ulcer of esophagus without bleeding.
What is the ICD-10 code for newborn peptic ulcer?
- P78.82 — Peptic ulcer of newborn.
Is K27.9 billable?
- Yes. K27.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K27.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K27.9 as a principal diagnosis.
Is K27.9 a CC or MCC?
- No. K27.9 is neither a CC nor an MCC under MS-DRG v44.0.