Peptic ulcer, site unspecified (K27) ICD-10-CM
The K27 code range covers peptic ulcer, site unspecified with 10 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- gastroduodenal ulcer NOS
- peptic ulcer NOS
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code to identify:
- alcohol abuse and dependence F10
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- peptic ulcer of newborn P78.82
Codes in the K27 Range 10 codes · 9 billable
- K27 Peptic ulcer, site unspecifiedNon-billable
- K27.0 Acute peptic ulcer, site unspecified, with hemorrhage
- K27.1 Acute peptic ulcer, site unspecified, with perforation
- K27.2 Acute peptic ulcer, site unspecified, with both hemorrhage and perforation
- K27.3 Acute peptic ulcer, site unspecified, without hemorrhage or perforation
- K27.4 Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage
- K27.5 Chronic or unspecified peptic ulcer, site unspecified, with perforation
- K27.6 Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation
- K27.7 Chronic peptic ulcer, site unspecified, without hemorrhage or perforation
- K27.9 Peptic ulcer, site unspecified, unspecified as acute or chronic, without hemorrhage or perforation
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K27 range.
Peptic Ulcer
Ulcer that occurs in the regions of the GASTROINTESTINAL TRACT which come into contact with GASTRIC JUICE containing PEPSIN and GASTRIC ACID. It occurs when there are defects in the MUCOSA barrier. The common forms of peptic ulcers are associated with HELICOBACTER PYLORI and the consumption of nonsteroidal anti-inflammatory drugs (NSAIDS).
About the K27 Code Range
A peptic ulcer is a sore in a part of the digestive tract exposed to stomach juice. Here, the ulcer’s site is unspecified.
The subdivisions separate acute ulcers from chronic or unspecified ulcers. They also distinguish hemorrhage (bleeding), perforation (a hole), both, or neither. K27.7 specifies a chronic ulcer without either complication. K27.9 describes an ulcer without either complication when acute or chronic status is unspecified.
Questions About This Page
How many billable codes are in the K27 range?
Of the 10 codes in this range, 9 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the K27 range classify?
The range classifies peptic ulcer, site unspecified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
