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ICD-10-CM 2027 diagnosis code

D37.8Neoplasm of uncertain behavior of other specified digestive organs

✓ Billable / specific

D37.8 is a valid, billable ICD-10-CM code for neoplasm of uncertain behavior of other specified digestive organs. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Neoplasm of uncertain behavior of oth digestive organs

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About D37.8

D37.8 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of other specified digestive organs. It belongs to category D37 (neoplasm of uncertain behavior of oral cavity and digestive organs), block D37-D48 (neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within D37, choose D37.8 (other specified digestive organs) only when documentation doesn't support a more specific option: lip, oral cavity and pharynx (D37.0), stomach (D37.1), small intestine (D37.2), appendix (D37.3), colon (D37.4), rectum (D37.5), liver, gallbladder and bile ducts (D37.6) and digestive organ, unspecified (D37.9).

Don't report D37.8 together with the conditions in its Excludes1 note: neoplasm of uncertain behavior of anal margin (D48.5), neoplasm of uncertain behavior of anal skin (D48.5) and neoplasm of uncertain behavior of perianal skin (D48.5).

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 374 (Digestive Malignancy with MCC, relative weight 2.1109), DRG 375 (Digestive Malignancy with CC, relative weight 1.1838) and DRG 376 (Digestive Malignancy without CC/MCC, relative weight 0.8929), 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.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 235.5 (neoplasm of uncertain behavior of other and unspecified digestive organs).

Coding notes

Applicable toConditions and synonyms classified to this code
  • 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
  • Neoplasm of uncertain behavior of pancreas
Excludes1Not coded here — never report together with this code
  • 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)

Notes that apply from higher levels

Instructions written at a parent level also apply to D37.8.

› From D37 Neoplasm of uncertain behavior of oral cavity and digestive organs
Excludes1
  • stromal tumors of uncertain behavior of digestive system (D48.1-)

Broader instructions also apply from D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes and Chapter 2: Neoplasms.

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to D37.8.

Table of Drugs & Neoplasms entries

Codes whose notes reference D37.8

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 235.5Neoplasm of uncertain behavior of other and unspecified digestive organsapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D37.8

Is D37.8 billable?

Yes. D37.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can D37.8 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict D37.8 as a principal diagnosis.

Is D37.8 a CC or MCC?

No. D37.8 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does D37.8 group to?

D37.8 is used in the MS-DRG v44.0 logic for MS-DRG 374 (Digestive Malignancy with MCC), MS-DRG 375 (Digestive Malignancy with CC) and MS-DRG 376 (Digestive Malignancy without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for D37.8?

The CMS General Equivalence Mappings map D37.8 to ICD-9-CM 235.5.