ICD-10 Z79.818
Billable / SpecificLong term (current) use of other agents affecting estrogen receptors and estrogen levels
About ICD-10-CM Z79.818
ICD-10-CM code Z79.818 represents Long term (current) use of other agents affecting estrogen receptors and estrogen levels. This is a billable/specific code in the Factors Influencing Health Status chapter (block Z79). The 2026 edition of ICD-10-CM Z79.818 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under Z79.818. Per CMS ICD-10-CM Tabular 2026.
- Long term (current) use of estrogen receptor downregulators
- Long term (current) use of fulvestrant (Faslodex)
- Long term (current) use of gonadotropin-releasing hormone (GnRH) agonist
- Long term (current) use of goserelin acetate (Zoladex)
- Long term (current) use of leuprolide acetate (leuprorelin) (Lupron)
- Long term (current) use of megestrol acetate (Megace)
Medicare LCD Coverage for Z79.818
Local Coverage Determinations (LCDs) from CMS MACs that list Z79.818 as a covered diagnosis.
Showing top 10 of 38 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing Z79.818.
5 Medicare
1 Aetna
CPT Codes Commonly Billed with Z79.818
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 Z79.818 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 |
|---|---|---|
| Z79.818 | V0759 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To Z79.818
Other codes in section Z77-Z99 (Persons with potential health hazards related to family and personal history and certain conditions influencing health status).
ICD-10 Z79.818, Billing FAQ
Is ICD-10 code Z79.818 billable? +
Yes, Z79.818 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 Z79.818? +
ICD-10 Z79.818 includes: Long term (current) use of estrogen receptor downregulators; Long term (current) use of fulvestrant (Faslodex); Long term (current) use of gonadotropin-releasing hormone (GnRH) agonist, and 3 more clinical synonyms.
What ICD-9 codes does Z79.818 map to? +
Per CMS GEMs, Z79.818 maps to ICD-9 codes: V0759. Useful for legacy data review and historical claim analysis.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team