ICD-10 D37.8
Billable / SpecificNeoplasm of uncertain behavior of other specified digestive organs
About ICD-10-CM D37.8
ICD-10-CM code D37.8 represents Neoplasm of uncertain behavior of other specified digestive organs. This is a billable/specific code in the Neoplasms chapter (block D37). The 2026 edition of ICD-10-CM D37.8 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under D37.8. Per CMS ICD-10-CM Tabular 2026.
- 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
Type 1 Excludes
Pure excludes, these codes can never be coded together with D37.8. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- 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)
Medicare LCD Coverage for D37.8
Local Coverage Determinations (LCDs) from CMS MACs that list D37.8 as a covered diagnosis.
Showing top 10 of 422 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D37.8.
5 Medicare
CPT Codes Commonly Billed with D37.8
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 44408 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 45379 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 44406 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 45390 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 45392 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 44394 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 44402 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 44390 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 44405 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
- 44388 CMS LCD: Billing and Coding: Diagnostic Colonoscopy CMS LCD
Convert D37.8 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| D37.8 | 2355 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D37.8
Other codes in section D37-D48 (Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes).
ICD-10 D37.8, Billing FAQ
Is ICD-10 code D37.8 billable? +
Yes, D37.8 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to D37.8? +
ICD-10 D37.8 includes: Neoplasm of uncertain behavior of anal canal; Neoplasm of uncertain behavior of anal sphincter; Neoplasm of uncertain behavior of anus NOS, and 3 more clinical synonyms.
What codes are Type 1 Excludes for D37.8? +
Type 1 Excludes (never code together with D37.8): 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)
What CPT codes are commonly billed with D37.8? +
Procedures frequently paired with D37.8 include: 44408, 45379, 44406, 45390, 45392.
What ICD-9 codes does D37.8 map to? +
Per CMS GEMs, D37.8 maps to ICD-9 codes: 2355. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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