ICD-10 J84.89
Billable / Specific HCC v28: 112Other specified interstitial pulmonary diseases
About ICD-10-CM J84.89
ICD-10-CM code J84.89 represents Other specified interstitial pulmonary diseases. This is a billable/specific code in the Respiratory System chapter (block J84). The 2026 edition of ICD-10-CM J84.89 became effective on October 1, 2025.
Coding Tips for J84.89
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
J84.89 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under J84.89. Per CMS ICD-10-CM Tabular 2026.
- Endogenous lipoid pneumonia
- Interstitial pneumonitis
- Non-specific interstitial pneumonitis NOS
- Organizing pneumonia NOS
Type 1 Excludes
Pure excludes, these codes can never be coded together with J84.89. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- cryptogenic organizing pneumonia (J84.116)
- idiopathic non-specific interstitial pneumonitis (J84.113)
- lipoid pneumonia, exogenous or unspecified (J69.1)
- lymphoid interstitial pneumonia (J84.2)
Use Additional Code
When coding J84.89, also report these additional codes when applicable.
- code, for adverse effect, to identify drug (T36-T50 with fifth or sixth character 5), if drug-induced
Coding Notes
Code First
- , if applicable:
- poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy
- underlying cause of pneumonopathy, if known
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 J84.89
Local Coverage Determinations (LCDs) from CMS MACs that list J84.89 as a covered diagnosis.
Showing top 10 of 662 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing J84.89.
5 Medicare
2 Aetna
CPT Codes Commonly Billed with J84.89
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 J84.89 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 |
|---|---|---|
| J84.89 | 515 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To J84.89
Other codes in section J80-J84 (Other respiratory diseases principally affecting the interstitium).
ICD-10 J84.89, Billing FAQ
Is ICD-10 code J84.89 billable? +
Yes, J84.89 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 J84.89? +
ICD-10 J84.89 includes: Endogenous lipoid pneumonia; Interstitial pneumonitis; Non-specific interstitial pneumonitis NOS, and 1 more clinical synonyms.
What codes are Type 1 Excludes for J84.89? +
Type 1 Excludes (never code together with J84.89): cryptogenic organizing pneumonia (J84.116); idiopathic non-specific interstitial pneumonitis (J84.113); lipoid pneumonia, exogenous or unspecified (J69.1)
Does J84.89 affect Medicare Advantage HCC risk adjustment? +
Yes. J84.89 maps to CMS-HCC v28 category 112. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What ICD-9 codes does J84.89 map to? +
Per CMS GEMs, J84.89 maps to ICD-9 codes: 515. 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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