ICD-10 J68.4
Billable / Specific HCC v28: 112Chronic respiratory conditions due to chemicals, gases, fumes and vapors
About ICD-10-CM J68.4
ICD-10-CM code J68.4 represents Chronic respiratory conditions due to chemicals, gases, fumes and vapors. This is a billable/specific code in the Respiratory System chapter (block J68). The 2026 edition of ICD-10-CM J68.4 became effective on October 1, 2025.
Coding Tips for J68.4
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
J68.4 is a CMS-HCC v28 risk-adjustment code (category 112). 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.
Type 1 Excludes
Pure excludes, these codes can never be coded together with J68.4. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- chronic pulmonary edema due to chemicals, gases, fumes and vapors (J68.1)
Coding Notes
Code Also
- , if applicable, chronic conditions, such as:
- emphysema (J43.-)
- obliterative bronchiolitis (J44.81)
- pulmonary fibrosis (J84.10)
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 J68.4
Local Coverage Determinations (LCDs) from CMS MACs that list J68.4 as a covered diagnosis.
Showing top 10 of 131 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing J68.4.
5 Medicare
CPT Codes Commonly Billed with J68.4
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 J68.4 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 |
|---|---|---|
| J68.4 | 5064 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To J68.4
Other codes in section J60-J70 (Lung diseases due to external agents).
ICD-10 J68.4, Billing FAQ
Is ICD-10 code J68.4 billable? +
Yes, J68.4 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for J68.4? +
Type 1 Excludes (never code together with J68.4): chronic pulmonary edema due to chemicals, gases, fumes and vapors (J68.1)
Does J68.4 affect Medicare Advantage HCC risk adjustment? +
Yes. J68.4 maps to CMS-HCC v28 category 112. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What ICD-9 codes does J68.4 map to? +
Per CMS GEMs, J68.4 maps to ICD-9 codes: 5064. 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 May 31, 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