ICD-10 D47.3
Billable / Specific HCC v28: 48Essential (hemorrhagic) thrombocythemia
About ICD-10-CM D47.3
ICD-10-CM code D47.3 represents Essential (hemorrhagic) thrombocythemia. This is a billable/specific code in the Neoplasms chapter (block D47). The 2026 edition of ICD-10-CM D47.3 became effective on October 1, 2025.
Coding Tips for D47.3
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
D47.3 is a CMS-HCC v28 risk-adjustment code (category 48). 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under D47.3. Per CMS ICD-10-CM Tabular 2026.
- Essential thrombocytosis
- Idiopathic hemorrhagic thrombocythemia
- Primary thrombocytosis
Type 2 Excludes
Not included here, the excluded code is not part of D47.3, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- reactive thrombocytosis (D75.838)
- secondary thrombocytosis (D75.838)
- thrombocythemia NOS (D75.839)
- thrombocytosis NOS (D75.839)
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.
Medicare LCD Coverage for D47.3
Local Coverage Determinations (LCDs) from CMS MACs that list D47.3 as a covered diagnosis.
Showing top 10 of 1,297 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing D47.3.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with D47.3
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- J0840 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J0850 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- 90371 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- 90375 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1573 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1569 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1459 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1557 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1556 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
- J1560 CMS LCD: Billing and Coding: Immune Globulins CMS LCD
Convert D47.3 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 |
|---|---|---|
| D47.3 | 23871 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To D47.3
Other codes in section D37-D48 (Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes).
ICD-10 D47.3, Billing FAQ
Is ICD-10 code D47.3 billable? +
Yes, D47.3 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 D47.3? +
ICD-10 D47.3 includes: Essential thrombocytosis; Idiopathic hemorrhagic thrombocythemia; Primary thrombocytosis.
What codes are Type 2 Excludes for D47.3? +
Type 2 Excludes (may be coded together when both conditions exist): reactive thrombocytosis (D75.838); secondary thrombocytosis (D75.838); thrombocythemia NOS (D75.839)
Does D47.3 affect Medicare Advantage HCC risk adjustment? +
Yes. D47.3 maps to CMS-HCC v28 category 48. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with D47.3? +
Procedures frequently paired with D47.3 include: J0840, J0850, 90371, 90375, J1573.
What ICD-9 codes does D47.3 map to? +
Per CMS GEMs, D47.3 maps to ICD-9 codes: 23871. 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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