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ICD-10-CM 2026 · Effective October 1, 2025

ICD-10 D12.4

Billable / Specific

Benign neoplasm of descending colon

D12
Block
0
Synonyms
353
LCDs
16
Payer Policies
25
Linked CPTs

About ICD-10-CM D12.4

ICD-10-CM code D12.4 represents Benign neoplasm of descending colon. This is a billable/specific code in the Neoplasms chapter (block D12). The 2026 edition of ICD-10-CM D12.4 became effective on October 1, 2025.

Medicare LCD Coverage for D12.4

Local Coverage Determinations (LCDs) from CMS MACs that list D12.4 as a covered diagnosis.

353 LCDs

Showing top 10 of 353 total . Click a CPT for full coverage scope.

CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 74170 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 74177 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 74160 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 74178 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 74150 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 72194 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 74176 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 72192 →
CMS LCD: Billing and Coding: CT of the Abdomen and Pelvis
Article ID: 56421, Effective: 2025-11-01 00:00:00, 5389 covered, 0 non-covered
CPT 72193 →
CMS LCD: Billing and Coding: Diagnostic Colonoscopy
Article ID: 55937, Effective: 2026-02-04 00:00:00, 244 covered, 1 non-covered
CPT 45398 →

Commercial Payer Coverage

Coverage policies from major commercial payers referencing D12.4.

16 policies

5 Medicare

Billing and Coding: Diagnostic Colonoscopy
Policy ID: ART-55937
Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
Policy ID: ART-56394
Billing and Coding: CT of the Abdomen and Pelvis
Policy ID: ART-56421
Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
Policy ID: ART-56456
Billing and Coding: Endoscopy by Capsule
Policy ID: ART-56461

CPT Codes Commonly Billed with D12.4

Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.

25 linkages
  • 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 D12.4 to ICD-9-CM

Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.

ICD-10ICD-9Mapping Flags
D12.4 2113 10000

Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).

Codes Adjacent To D12.4

Other codes in section D10-D36 (Benign neoplasms, except benign neuroendocrine tumors).

D10 Benign neoplasm of mouth and pharynx (non-billable) D10.0 Benign neoplasm of lip D10.1 Benign neoplasm of tongue D10.2 Benign neoplasm of floor of mouth D10.3 Benign neoplasm of other and unspecified parts of mouth (non-billable) D10.30 Benign neoplasm of unspecified part of mouth D10.39 Benign neoplasm of other parts of mouth D10.4 Benign neoplasm of tonsil D10.5 Benign neoplasm of other parts of oropharynx D10.6 Benign neoplasm of nasopharynx D10.7 Benign neoplasm of hypopharynx D10.9 Benign neoplasm of pharynx, unspecified D11 Benign neoplasm of major salivary glands (non-billable) D11.0 Benign neoplasm of parotid gland D11.7 Benign neoplasm of other major salivary glands D11.9 Benign neoplasm of major salivary gland, unspecified D12 Benign neoplasm of colon, rectum, anus and anal canal (non-billable) D12.0 Benign neoplasm of cecum D12.1 Benign neoplasm of appendix D12.2 Benign neoplasm of ascending colon

ICD-10 D12.4, Billing FAQ

Is ICD-10 code D12.4 billable? +

Yes, D12.4 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.

What CPT codes are commonly billed with D12.4? +

Procedures frequently paired with D12.4 include: 44408, 45379, 44406, 45390, 45392.

What ICD-9 codes does D12.4 map to? +

Per CMS GEMs, D12.4 maps to ICD-9 codes: 2113. 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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