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ICD-10-CM 2027

ICD-10 code for Pneumopathy NEC

J98.4

Other disorders of lung

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Pneumopathy NEC”. Page updated September 29, 2026.

About coding Pneumopathy NEC

The ICD-10-CM code for Pneumopathy NEC is J98.4 (Other disorders of lung). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J98.4.

Within J98, choose J98.4 (Other disorders of lung) only when documentation doesn't support a more specific option: diseases of bronchus, not elsewhere classified (J98.0), pulmonary collapse (J98.1), interstitial emphysema (J98.2), Compensatory emphysema (J98.3), diseases of mediastinum, not elsewhere classified (J98.5), disorders of diaphragm (J98.6), other specified respiratory disorders (J98.8) and respiratory disorder, unspecified (J98.9).

Don't report J98.4 together with the conditions in its Excludes1 note: acute interstitial pneumonitis (J84.114) and pulmonary insufficiency following surgery (J95.1-J95.2).

Use an additional code to identify: exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.

More specific Pneumopathy NEC codes (official index)

  • alveolar J84.09 — Other alveolar and parieto-alveolar conditions
  • due to organic dust NEC J66.8 — Airway disease due to other specific organic dusts
  • parietoalveolar J84.09 — Other alveolar and parieto-alveolar conditions

Don't confuse with (Excludes1 for J98.4)

  • acute interstitial pneumonitis (J84.114)
  • pulmonary insufficiency following surgery (J95.1-J95.2)

Common questions about Pneumopathy NEC ICD-10 codes

What is the ICD-10 code for Pneumopathy NEC?

J98.4 — Other disorders of lung. More specific codes apply when the documentation supports them: J84.09, J66.8, J84.09.

What is the ICD-10 code for alveolar pneumopathy nec?

J84.09 — Other alveolar and parieto-alveolar conditions.

What is the ICD-10 code for parietoalveolar pneumopathy nec?

J84.09 — Other alveolar and parieto-alveolar conditions.

Is J98.4 billable?

Yes. J98.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can J98.4 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict J98.4 as a principal diagnosis.

Is J98.4 a CC or MCC?

No. J98.4 is neither a CC nor an MCC under MS-DRG v44.0.