K31.1
BillableAdult hypertrophic pyloric stenosis
Adult hypertrophic pyloric stenosis
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Pyloric stenosis NOS
Includes
Conditions included under this code
- functional disorders of stomach
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •hiatus herniaK44
- •diabetic gastroparesis, , , ,E08.43, E09.43, E10.43, E11.43, E13.43
- •diverticulum of duodenumK57.00-K57.13
Related Codes(10)
K31.0Acute dilatation of stomach
K31.2Hourglass stricture and stenosis of stomach
K31.3Pylorospasm, not elsewhere classified
K31.4Gastric diverticulum
K31.5Obstruction of duodenum
K31.6Fistula of stomach and duodenum
K31.7Polyp of stomach and duodenum
K31.8Other specified diseases of stomach and duodenum
K31.9Disease of stomach and duodenum, unspecified
K31.AGastric intestinal metaplasia
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(59)
SNOMED CT
- Acquired gastric outlet stenosis13483000
- Acquired hypertrophic pyloric stenosis13483000
- Pyloric antral stenosis25948008
- Peptic ulcer with haemorrhage, with perforation AND with obstruction26221006
- Peptic ulcer with hemorrhage, with perforation AND with obstruction26221006
- Acquired pyloric constriction196760001
- Acquired pyloric stricture196761002
- Acquired stricture of pylorus196761002
- Gastric outflow obstruction244815007
- Pyloric obstruction244815007
- Adult hypertrophic pyloric stenosis266438007
- Acquired nonhypertrophic constriction of pylorus333952004
- PS - Pyloric stenosis367403001
- Pyloric stenosis367403001
- Acquired obstruction of pylorus416605008
- Acquired pyloric obstruction416605008
- Bouveret syndrome431931000124108
- Gastric outlet obstruction due to gallstone431931000124108
UMLS
- Adult hypertrophic pyloric stenosisC2937286
- Adult hypertrophic pyloric stenosis (disorder)C2937286
- Gastric Outlet ObstructionC0034194
- PS - Pyloric stenosisC0034194
- Pyloric StenosisC0034194
- Pyloric stenosisC0034194
- Pyloric stenosis (disorder)C0034194
- Pyloric stenosis NOSC0034194
- Stenosis pyloricC0034194
- Stenosis, PyloricC0034194
- gastric outflow obstructionC0034194
- gastric outlet obstructionC0034194
- pyloric obstructionC0034194
- pyloric stenosesC0034194
- pyloric stenosiC0034194
- pyloric stenosisC0034194
Clinical Terms
- Stenosis pyloric
- Stenosis, Pyloric
- pyloric obstruction
- Acquired gastric outlet stenosis
- gastric outlet obstruction
- Acquired hypertrophic pyloric stenosis
- Gastric outlet obstruction due to gallstone
- gastric outflow obstruction
- Acquired pyloric stricture
- Peptic ulcer with haemorrhage, with perforation AND with obstruction
- Acquired pyloric constriction
- pyloric stenoses
- Pyloric stenosis (disorder)
- Acquired nonhypertrophic constriction of pylorus
- Pyloric antral stenosis
- Pyloric Stenosis
- Acquired pyloric obstruction
- Adult hypertrophic pyloric stenosis (disorder)
- Peptic ulcer with hemorrhage, with perforation AND with obstruction
- pyloric stenosi
- Acquired obstruction of pylorus
- PS - Pyloric stenosis
- Pyloric stenosis NOS
- Bouveret syndrome
- Acquired stricture of pylorus
Frequently Asked Questions
What is the ICD-10 code for adult hypertrophic pyloric stenosis?
The ICD-10-CM code for adult hypertrophic pyloric stenosis is K31.1. The full clinical description is "Adult hypertrophic pyloric stenosis". K31.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code K31.1 mean?
ICD-10-CM code K31.1 represents “Adult hypertrophic pyloric stenosis”. It is classified under Chapter 11: Diseases of the Digestive System and is a billable/specific code that can be used on a claim.
Is K31.1 a billable code?
Yes, K31.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is K31.1 in?
K31.1 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K31.1?
K31.1 has Excludes1 notes indicating codes that cannot be used together with it, including: congenital or infantile pyloric stenosis (Q40.0).
What SNOMED CT codes does K31.1 map to?
K31.1 maps to 11 SNOMED CT concepts: 13483000, 333952004, 416605008, 196760001, 196761002, and 6 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for K31.1?
K31.1 is linked to 2 UMLS Concept Unique Identifiers: C2937286, C0034194. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does K31.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like adult hypertrophic pyloric stenosis affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of K31.1?
K31.1 maps to the ICD-11 code: DA40.0 (Gastric outlet obstruction).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.