ICD-10 Code
International Classification of Diseases, 10th Revision
Feb 20, 2019
  ICD-10 Code for Disease of stomach & duodenum, unspecified K31.9

K31.9 is a valid1 ICD 10 diagnosis code.

K31.9 is valid for submission for HIPAA-covered transactions.

Chapter 11 Diseases of the digestive system (K00-K95)
Section K20-K31 Diseases of esophagus, stomach and duodenum (K20-K31)
Category K31 Other diseases of stomach and duodenum

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
See also ICD 10 code for

Related Terms to “Disease of stomach and duodenum, unspecified”

  • Disease, diseasedSee also Syndrome
    • duodenum - K31.9
    • stomach - K31.9
  • Disorder(of)See also Disease
    • gastric(functional) - K31.9
  • Disturbance(s)See also Disease
    • stomach(functional) - K31.9
  • Dysfunction
    • pylorus - K31.9
  • Gastropathy - K31.9
  • Lesion(s) (nontraumatic)
    • cardia - K31.9
    • duodenum - K31.9
    • gastric - K31.9
    • gastroduodenal - K31.9
    • pylorus - K31.9
    • stomach - K31.9
See the ICD-10-CM Coding Guidelines.

Questions related to K31.9 Disease of stomach and duodenum, unspecified

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.