J99

Respiratory disorders in diseases classified elsewhere

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC280

Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders

CMS-HCC ESRD V24

HCC112

Fibrosis of Lung and Other Chronic Lung Disorders

RxHCC V08

RXHCC227

Pulmonary Fibrosis, Except Idiopathic

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · J99
Excludes 1

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

underlying disease, such as: amyloidosis (E85.-) ankylosing spondylitis (M45.-) congenital syphilis (A50.-) cryoglobulinemia (D89.1) early congenital syphilis (A50.0-) plasminogen deficiency (E88.02) schistosomiasis (B65.0-B65.9)

Inherited from chapter 10Diseases of the respiratory system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) smoke inhalation (T59.81-) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use additional

code, where applicable, 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.-) tobacco use (Z72.0)

Note

When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).

Official Guidelines for J99

FY 2026 ›