J84.113
Billable codeIdiopathic non-specific interstitial pneumonitis
The ICD-10 code for idiopathic non-specific interstitial pneumonitis is J84.113.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- non-specific interstitial pneumonia NOS, or due to known underlying cause (J84.89)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- J84.111Idiopathic interstitial pneumonia, not otherwise specified
- J84.112Idiopathic pulmonary fibrosis
- J84.114Acute interstitial pneumonitis
- J84.115Respiratory bronchiolitis interstitial lung disease
- J84.116Cryptogenic organizing pneumonia
- J84.117Desquamative interstitial pneumonia
- J84.113Idiopathic non-specific interstitial pneumonitis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 51632
Associated MS-DRGs
J84.113 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.