ICD-10-CM 2027
ICD-10 code for digestive system disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › digestive (system)”. Page updated September 29, 2026.
About coding digestive system disorder
The ICD-10-CM code for digestive system disorder is K92.9 (Disease of digestive system, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K92.9.
Within K92, choose K92.9 (Disease of digestive system, unspecified) only when documentation doesn't support a more specific option: hematemesis (K92.0), melena (K92.1), gastrointestinal hemorrhage, unspecified (K92.2) and other specified diseases of the digestive system (K92.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 393 (Other Digestive System Diagnoses with MCC, relative weight 1.5881), DRG 394 (Other Digestive System Diagnoses with CC, relative weight 0.9228) and DRG 395 (Other Digestive System Diagnoses without CC/MCC, relative weight 0.6382), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific digestive system disorder codes (official index)
Common questions about digestive system disorder ICD-10 codes
What is the ICD-10 code for digestive system disorder?
- K92.9 — Disease of digestive system, unspecified. More specific codes apply when the documentation supports them: P78.9, P78.89, F45.8.
What is the ICD-10 code for newborn digestive system disorder?
- P78.9 — Perinatal digestive system disorder, unspecified.
What is the ICD-10 code for psychogenic digestive system disorder?
- F45.8 — Other somatoform disorders.
Is K92.9 billable?
- Yes. K92.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K92.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K92.9 as a principal diagnosis.
Is K92.9 a CC or MCC?
- No. K92.9 is neither a CC nor an MCC under MS-DRG v44.0.