K92.81 Gastrointestinal mucositis (ulcerative)

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Excludes2 (not included here)

• mucositis (ulcerative) of vagina and vulva (N76.81)
• nasal mucositis (ulcerative) (J34.81)
• oral mucositis (ulcerative) (K12.3-)

Code also

• type of associated therapy, such as:
• antineoplastic and immunosuppressive drugs (T45.1X-)
• radiological procedure and radiotherapy (Y84.2)

Applies from K92 Other diseases of digestive system

Excludes1 (never code together)

• neonatal gastrointestinal hemorrhage (P54.0-P54.3)

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 538 Gastrointestinal mucositis (ulcerative)

Code annotations containing back-references to K92.81

Back-references to K92.81

• Code Also: D70 Neutropenia (", if applicable, mucositis (J34.81, K12.3-, K92.81, N76.81)")
• Type 2 Excludes: J34.81 Nasal mucositis (ulcerative) ("gastrointestinal mucositis (ulcerative) (K92.81)")
• Type 2 Excludes: K12.3 Oral mucositis (ulcerative) ("gastrointestinal mucositis (ulcerative) (K92.81)")
• Type 2 Excludes: N76.81 Mucositis (ulcerative) of vagina and vulva ("gastrointestinal mucositis (ulcerative) (K92.81)")

Diagnosis Index entries for K92.81

• Mucositis (ulcerative) › gastrointestinal

Nearby codes

• K92 Other diseases of digestive system
• K92.0 Hematemesis
• K92.1 Melena
• K92.2 Gastrointestinal hemorrhage, unspecified
• K92.8 Other specified diseases of the digestive system
• K92.81 Gastrointestinal mucositis (ulcerative) (this code)
• K92.89 Other specified diseases of the digestive system
• K92.9 Disease of digestive system, unspecified