Respiratory disorders in diseases classified elsewhere
In Other diseases of the respiratory system (J96-J99), chapter 10: Diseases of the Respiratory System
- J99 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under J96-J99 below.
- As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
- Counts toward HCC 280 (Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders) in the Medicare Advantage risk model (CMS-HCC V28).
- AHRQ's Chronic Condition Indicator classes it as not chronic (an acute or short-term condition).
- Can't be the principal diagnosis: code the underlying condition first. (Manifestation list)
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Instructional notes
Excludes1: not coded here, use a different code
- respiratory disorders in:
- amebiasis (A06.5)
- blastomycosis (B40.0-B40.2)
- candidiasis (B37.1)
- coccidioidomycosis (B38.0-B38.2)
- cystic fibrosis with pulmonary manifestations (E84.0)
- dermatomyositis (M33.01, M33.11)
- histoplasmosis (B39.0-B39.2)
- late syphilis (A52.72, A52.73)
- polymyositis (M33.21)
- Sjögren syndrome (M35.02)
- systemic lupus erythematosus (M32.13)
- systemic sclerosis (M34.81)
- Wegener's granulomatosis (M31.30-M31.31)
Code first: code the underlying condition first, then this code
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers COPD and asthma exacerbations, sequencing of acute respiratory failure, confirmed versus suspected identified influenza, ventilator associated pneumonia, and vaping-related disorders.
- Chronic Obstructive Pulmonary Disease [COPD] and Asthma (page 56)
- Acute Respiratory Failure (page 56)
- Influenza due to certain identified influenza viruses (page 57)
- Ventilator associated Pneumonia (page 57)
- Vaping-related disorders (page 58)
Other codes under J96-J99
Other diseases of the respiratory system (J96-J99)
- J96Respiratory failure, not elsewhere classified
- J98Other respiratory disorders
- J99Respiratory disorders in diseases classified elsewhere(this code)
J99 MS-DRGs
As the principal diagnosis, J99 groups to these 10 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 154 Other Ear, Nose, Mouth and Throat Diagnoses with MCC
- DRG 155 Other Ear, Nose, Mouth and Throat Diagnoses with CC
- DRG 156 Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC
- DRG 157 Dental and Oral Diseases with MCC
- DRG 158 Dental and Oral Diseases with CC
- DRG 159 Dental and Oral Diseases without CC/MCC
- DRG 196 Interstitial Lung Disease with MCC
- DRG 197 Interstitial Lung Disease with CC
- DRG 198 Interstitial Lung Disease without CC/MCC
- DRG 795 Normal Newborn
Related conditions
Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.
J99 is in Other specified and unspecified lower respiratory disease (RSP016), with 78 codes. Others in it:
Medicare coverage articles listing J99
These 5 Medicare billing and coding articles list J99 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.
Other codes that refer to J99
Notes on these codes point to J99.
- E88.02 Use Additional Code: respiratory disorder related to plasminogen deficiency (J99)
- O99.5 Includes: Conditions in J00-J99
- P00.3 Includes: Newborn affected by maternal conditions classifiable to I00-I99, J00-J99, Q20-Q34 and not included in P00.0, P00.2
- Z83.6 Includes: Conditions classifiable to J00-J39, J60-J99
- Z87.0 Includes: Conditions classifiable to J00-J99
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Lung Diseases
When you breathe, your lungs take in oxygen from the air and deliver it to the bloodstream. The cells in your body need oxygen to work and grow. During a normal day, you breathe nearly 25,000 times. People with lung disease have difficulty breathing. Millions of people in the U.S. have lung disease. If all types of lung disease are lumped together, it is the number three killer in the United States.
Read more about lung diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.
ICD-9-CM equivalent
Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).
- 517.8 Lung involvement in other diseases classified elsewhere (approximate)