ICD10BillableValid for clinical use

ICD-10 Code D37.6: Neoplasm of uncertain behavior of liver, gallbladder and bile ducts

D37.6 is a billable ICD-10 diagnosis code used to classify Neoplasm of uncertain behavior of liver, gallbladder and bile ducts in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).

When is it used?

  • May be used when a clinician documents neoplasm of uncertain behavior of liver, gallbladder and bile ducts in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
2Neoplasms (C00-D49)
block
D37-D48Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
category
D37Neoplasm of uncertain behavior of oral cavity and digestive organs
currentD37

Official coding notes

Inclusion terms
  • Neoplasm of uncertain behavior of ampulla of Vater

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

OncologistGeneral PhysicianGastroenterologistUrologist

Coverage-related procedures and services

CPT 81540high
ONCOLOGY (TUMOR OF UNKNOWN ORIGIN), MRNA, GENE EXPRESSION PROFILING BY REAL-TIME RT-PCR OF 92 GENES (87 CONTENT AND 5 HOUSEKEEPING) TO CLASSIFY TUMOR INTO MAIN CANCER TYPE AND SUBTYPE, UTILIZING FORMALIN-FIXED PARAFFIN-EMBEDDED TISSUE, ALGORITHM REPORTED AS A PROBABILITY OF A PREDICTED MAIN CANCER TYPE AND SUBTYPE
Source: CMS coverage guidance
CPT 43235high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; DIAGNOSTIC, INCLUDING COLLECTION OF SPECIMEN(S) BY BRUSHING OR WASHING, WHEN PERFORMED (SEPARATE PROCEDURE)
Source: CMS coverage guidance
CPT 43270high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH ABLATION OF TUMOR(S), POLYP(S), OR OTHER LESION(S) (INCLUDES PRE- AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED)
Source: CMS coverage guidance
CPT 43244high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH BAND LIGATION OF ESOPHAGEAL/GASTRIC VARICES
Source: CMS coverage guidance
CPT 43239high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH BIOPSY, SINGLE OR MULTIPLE
Source: CMS coverage guidance
CPT 43255high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH CONTROL OF BLEEDING, ANY METHOD
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
D37.6

Common synonyms

Neoplasm of uncertain behavior of liver, gallbladder and bile ducts

Frequently asked questions

Code details

CodeD37.6
SystemICD10
Display nameNeoplasm of uncertain behavior of liver, gallbladder and bile ducts
ChapterNeoplasms (C00-D49)
BlockNeoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.