ICD-10 F18.10
Billable / Specific HCC v28: 56Inhalant abuse, uncomplicated
About ICD-10-CM F18.10
ICD-10-CM code F18.10 represents Inhalant abuse, uncomplicated. This is a billable/specific code in the Mental, Behavioral, and Neurodevelopmental chapter (block F18). The 2026 edition of ICD-10-CM F18.10 became effective on October 1, 2025.
Coding Tips for F18.10
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
F18.10 is a CMS-HCC v28 risk-adjustment code (category 56). 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 F18.10. Per CMS ICD-10-CM Tabular 2026.
- Inhalant use disorder, mild
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 F18.10
Local Coverage Determinations (LCDs) from CMS MACs that list F18.10 as a covered diagnosis.
Showing top 10 of 338 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing F18.10.
1 Cigna
5 Medicare
1 Aetna
CPT Codes Commonly Billed with F18.10
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- G0480 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80306 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0482 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 0603U CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80305 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0659 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0483 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80307 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0481 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80323 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
Convert F18.10 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 |
|---|---|---|
| F18.10 | 30590 | 10000 |
| F18.10 | 30591 | 10000 |
| F18.10 | 30592 | 10000 |
| F18.10 | 30593 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To F18.10
Other codes in section F10-F19 (Mental and behavioral disorders due to psychoactive substance use).
ICD-10 F18.10, Billing FAQ
Is ICD-10 code F18.10 billable? +
Yes, F18.10 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 F18.10? +
ICD-10 F18.10 includes: Inhalant use disorder, mild.
Does F18.10 affect Medicare Advantage HCC risk adjustment? +
Yes. F18.10 maps to CMS-HCC v28 category 56. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with F18.10? +
Procedures frequently paired with F18.10 include: G0480, 80306, G0482, 0603U, 80305.
What ICD-9 codes does F18.10 map to? +
Per CMS GEMs, F18.10 maps to ICD-9 codes: 30590, 30591, 30592, 30593. 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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