K27 is the authoritative medical code for Peptic ulcer, site unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for peptic ulcer, site unspecified (ICD-10-CM K27), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Peptic ulcer, site unspecified is a non-billable ICD-10-CM category code K27. A more specific billable subcode must be selected for claims submission. Includes: gastroduodenal ulcer NOS; peptic ulcer NOS. Excludes1 (not coded here): peptic ulcer of newborn P78.82. Excludes2 (not included here): hiatus hernia K44.-. Use additional code: code to identify:; alcohol abuse and dependence F10.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for K27 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- gastroduodenal ulcer NOS
- peptic ulcer NOS
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- peptic ulcer of newborn P78.82
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code to identify:
- alcohol abuse and dependence F10.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can K27 be billed directly?
No. K27 (Peptic ulcer, site unspecified) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with K27?
Per Excludes1 instructions, K27 must not be reported with: peptic ulcer of newborn (P78.82).
Can K27 be reported alongside related conditions?
Per Excludes2 instructions, K27 and the following may both be reported when both are present: hiatus hernia (K44.-).
Is an additional code needed with K27?
Use additional code(s) to specify: code to identify:; alcohol abuse and dependence (F10.-).
Codes in This Family (9)
Official ICD-10-CM classifications in the same code family as K27, with their registry titles.
- 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
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code K23
Disorders of esophagus in diseases classified elsewhere