ICD-10 B73.09
Billable / Specific CCOnchocerciasis with other eye involvement
About ICD-10-CM B73.09
ICD-10-CM code B73.09 represents Onchocerciasis with other eye involvement. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block B73). The 2026 edition of ICD-10-CM B73.09 became effective on October 1, 2025.
Coding Tips for B73.09
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
B73.09 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 B73.09. Per CMS ICD-10-CM Tabular 2026.
- Infestation of eyelid due to onchocerciasis
Inpatient DRG Impact, CC
codes Onchocerciasis with other eye involvement. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for B73.09
Local Coverage Determinations (LCDs) from CMS MACs that list B73.09 as a covered diagnosis.
Showing top 9. Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing B73.09.
1 Medicare
CPT Codes Commonly Billed with B73.09
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 B73.09 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 |
|---|---|---|
| B73.09 | 1253 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To B73.09
Other codes in section B65-B83 (Helminthiases).
ICD-10 B73.09, Billing FAQ
Is ICD-10 code B73.09 billable? +
Yes, B73.09 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 B73.09? +
ICD-10 B73.09 includes: Infestation of eyelid due to onchocerciasis.
Is B73.09 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 B73.09 map to? +
Per CMS GEMs, B73.09 maps to ICD-9 codes: 1253. 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 May 31, 2026.
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