K31.B ICD-10-CM Code: Hypertrophic pyloric stenosis, in childhood
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
K31.BHypertrophic pyloric stenosis, in childhood
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where K31.B sits
- 1
Chapter 11
Diseases of the digestive system (K00-K95)
- 2
Section
Diseases of esophagus, stomach and duodenum (K20-K31)
- 3
Category K31
Other diseases of stomach and duodenum
- 4
Code K31.B
Hypertrophic pyloric stenosis, in childhood
Documentation details
Notes for this code
Inclusion terms
- Infantile hypertrophic pyloric stenosis
- Pediatric hypertrophic pyloric stenosis
- Pediatric pyloric stenosis
Code first
No “code first” instruction is listed for K31.B.
Use additional code
No “use additional code” instruction is listed for K31.B.
Excludes1
Conditions that should not be reported together with this code.
- congenital pyloric stenosis (Q40.0)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for K31.B.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code K31.B mean?
K31.B is the FY 2027 U.S. ICD-10-CM code for “Hypertrophic pyloric stenosis, in childhood.”
Is K31.B a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, K31.B has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is K31.B located in ICD-10-CM?
K31.B is listed in Chapter 11, Diseases of the digestive system (K00-K95), within Diseases of esophagus, stomach and duodenum (K20-K31) (K20–K31), under category K31, Other diseases of stomach and duodenum.
What coding notes are listed for K31.B?
Its listed inclusion terms are Infantile hypertrophic pyloric stenosis; Pediatric hypertrophic pyloric stenosis; Pediatric pyloric stenosis. No code-first instruction is listed. Excludes1 notes: congenital pyloric stenosis (Q40.0). No Excludes2 note is listed.
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