K31.1

ICD-10-CM Coding Rules

• K31.1

Applicable To

• Pyloric stenosis NOS

Approximate Synonyms

• Acquired hypertrophic pyloric stenosis

• Gastric outlet obstruction

• Obstruction, gastric outlet

• Pyloric obstruction

• Pyloric stenosis

• Stenosis, pyloric

Clinical Information

• Narrowing of the pyloric canal with varied etiology. A common form is due to muscle hypertrophy pyloric stenosis, hypertrophic) seen in infants.

• Narrowing of the pyloric lumen caused either by hypertrophy of the surrounding muscles or tissue scarring due to a chronic peptic ulcer.

Details

• K31.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM K31.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of K31.1 – other international versions of ICD-10 K31.1 may differ.