Skip to content

D37.8 ICD-10-CM Code: Neoplasm of uncertain behavior of other specified digestive organs

D37.8 is not a CMS-HCC payment code. MEAT criteria · RAF calculator · HCC Buddy coding tools

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

FY 2026 Apr update / Neoplasms (C00-D49) / Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)

D37.8

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Neoplasm of uncertain behavior of other specified digestive organs

A growth in other parts of the digestive system (not liver, gallbladder, or bile ducts) that cannot yet be classified as cancer or benign. The specific organ involved should be documented.

CMS-HCC V28

N/A

Not mapped

CMS-HCC V24

N/A

Not mapped

ACA/HHS

N/A

Not mapped

ESRD/PACE

N/A

Not mapped

RXHCC

N/A

Not mapped

Code Book Path

Official
D37Neoplasm of uncertain behavior of oral cavity and digestive organs
D37.8Neoplasm of uncertain behavior of other specified digestive organs

Inclusion Terms

Official
  • Neoplasm of uncertain behavior of anal canal
  • Neoplasm of uncertain behavior of anal sphincter
  • Neoplasm of uncertain behavior of anus NOS
  • Neoplasm of uncertain behavior of esophagus
  • Neoplasm of uncertain behavior of intestine NOS

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for D37.8 in this effective period.

Related Child Codes

Official
D37.0Neoplasm of uncertain behavior of lip, oral cavity and pharynx
D37.1Neoplasm of uncertain behavior of stomach
D37.2Neoplasm of uncertain behavior of small intestine
D37.3Neoplasm of uncertain behavior of appendix
D37.4Neoplasm of uncertain behavior of colon

Includes

Official

ICD-10-CM does not list Includes notes for D37.8 in this effective period.

Excludes 1

Official
  • neoplasm of uncertain behavior of anal margin (D48.5)
  • neoplasm of uncertain behavior of anal skin (D48.5)
  • neoplasm of uncertain behavior of perianal skin (D48.5)

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for D37.8 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for D37.8 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for D37.8 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
This is a catch-all code for digestive organs not covered by D37.0-D37.6; always specify the organ site in documentation
Review pathology reports carefully to confirm the uncertain behavior designation before coding

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is D37.8 an HCC code?

No. D37.8 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

Code
D37.8
Description
Neoplasm of uncertain behavior of other specified digestive organs
HCC (V28)
No CMS-HCC V28 mapping
RAF
Billable
Yes
Payment year
2026

Coder workflow notes

Get the V28 RAF + MEAT cheat sheet

One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.

Free PDF. No card. Unsubscribe anytime.

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

D37.8 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of other specified digestive organs. A growth in other parts of the digestive system (not liver, gallbladder, or bile ducts) that cannot yet be classified as cancer or benign. The specific organ involved should be documented. D37.8 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (d37-d48).

D37.8 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

This is a catch-all code for digestive organs not covered by D37.0-D37.6; always specify the organ site in documentation.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D37.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • This is a catch-all code for digestive organs not covered by D37.0-D37.6; always specify the organ site in documentation
  • Review pathology reports carefully to confirm the uncertain behavior designation before coding

Excludes 1, Do NOT code together

  • neoplasm of uncertain behavior of anal margin (D48.5)
  • neoplasm of uncertain behavior of anal skin (D48.5)
  • neoplasm of uncertain behavior of perianal skin (D48.5)

Child Codes

Code Hierarchy

Work D37.8 in HCC Buddy

Open D37.8 in the Code Book for the full Index-to-Tabular path, MEAT checklist, and V28 HCC mapping, or in the Encoder to code from a keyword search. Pro includes 7 days to try everything, no card required.