ICD-10 C83.398
Billable / Specific HCC v28: 10 CCDiffuse large B-cell lymphoma of other extranodal and solid organ sites
About ICD-10-CM C83.398
ICD-10-CM code C83.398 represents Diffuse large B-cell lymphoma of other extranodal and solid organ sites. This is a billable/specific code in the chapter (block C83). The 2026 edition of ICD-10-CM C83.398 became effective on October 1, 2025.
Coding Tips for C83.398
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
C83.398 is a CMS-HCC v28 risk-adjustment code (category 10). To count for the patient Risk Adjustment Factor (RAF), document the diagnosis with MEAT language each calendar year: Monitored, Evaluated, Assessed, Treated. A diagnosis on the problem list alone does not satisfy CMS RADV audit standards. Include the diagnosis in the assessment with current status and current treatment plan.
C83.398 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Inpatient DRG Impact, CC
codes Diffuse large B-cell lymphoma of other extranodal and solid organ sites. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for C83.398
Local Coverage Determinations (LCDs) from CMS MACs that list C83.398 as a covered diagnosis.
Showing top 10 of 1,213 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing C83.398.
5 Medicare
CPT Codes Commonly Billed with C83.398
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
Codes Adjacent To C83.398
Other codes in section C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).
ICD-10 C83.398, Billing FAQ
Is ICD-10 code C83.398 billable? +
Yes, C83.398 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Does C83.398 affect Medicare Advantage HCC risk adjustment? +
Yes. C83.398 maps to CMS-HCC v28 category 10. Capture this diagnosis annually for accurate Medicare Advantage risk score.
Is C83.398 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with C83.398? +
Procedures frequently paired with C83.398 include: 44408, 45379, 44406, 45390, 45392.
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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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