ICD-10 R71.0
Billable / Specific CCPrecipitous drop in hematocrit
About ICD-10-CM R71.0
ICD-10-CM code R71.0 represents Precipitous drop in hematocrit. This is a billable/specific code in the Symptoms, Signs, and Abnormal Findings chapter (block R71). The 2026 edition of ICD-10-CM R71.0 became effective on October 1, 2025.
Coding Tips for R71.0
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
R71.0 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under R71.0. Per CMS ICD-10-CM Tabular 2026.
- Drop (precipitous) in hemoglobin
- Drop in hematocrit
Inpatient DRG Impact, CC
codes Precipitous drop in hematocrit. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for R71.0
Local Coverage Determinations (LCDs) from CMS MACs that list R71.0 as a covered diagnosis.
Showing top 10 of 41 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing R71.0.
2 Medicare
CPT Codes Commonly Billed with R71.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert R71.0 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 |
|---|---|---|
| R71.0 | 79001 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To R71.0
Other codes in section R70-R79 (Abnormal findings on examination of blood, without diagnosis).
ICD-10 R71.0, Billing FAQ
Is ICD-10 code R71.0 billable? +
Yes, R71.0 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 R71.0? +
ICD-10 R71.0 includes: Drop (precipitous) in hemoglobin; Drop in hematocrit.
Is R71.0 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 ICD-9 codes does R71.0 map to? +
Per CMS GEMs, R71.0 maps to ICD-9 codes: 79001. 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 June 1, 2026.
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