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v1.0.0
ICD-10 Guide
DiagnosesGastric Mass

Gastric Mass

ICD-10 Coding for Gastric Mass(C16.9, D13.1)

PRIMARY SPECIALTYGastroenterology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Gastric Mass?
Essential facts and insights about Gastric Mass

Key Clinical Considerations:

  • Abdominal pain or discomfort
  • Nausea or vomiting
  • Weight loss or anorexia
  • Key diagnostic tests: Endoscopy, CT scan, MRI
  • Physical exam findings: Palpable mass, tenderness in the epigastric region

Clinical Information

Clinical Criteria & Documentation Requirements

  • Required documentation elements: Patient history, physical exam findings, imaging results
  • Specific coding terminology: Gastric mass, neoplasm, lesion
  • Documentation examples: 'CT scan shows a 5 cm gastric mass consistent with a neoplasm.'

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Differentiate between malignant and benign masses.
  • Common errors: Misclassifying benign masses as malignant.

Code Exclusions

Important Exclusions

  • Excluded conditions: Gastric ulcers, gastritis
  • Alternative codes: Codes for specific types of gastric neoplasms

Related ICD-10 Codes

Primary Codes
C16.9
Malignant neoplasm of stomach, unspecified
D13.1
Benign neoplasm of stomach
Ancillary Codes
Z12.0
Differential Codes
D13.1
C16.9

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Gastroenterology

Specialty Applications

  • Patient populations: Adults, elderly patients
  • Clinical settings: Outpatient gastroenterology clinics, inpatient hospitals

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document all clinical findings, imaging results, and treatment plans.

Billing considerations?

Ensure accurate coding based on the type of mass and associated symptoms.