Diseases of the respiratory system (J00–J99) ICD-10-CM
Chapter 10 of the ICD-10-CM classification spans codes J00–J99 and contains 471 diagnosis codes for diseases of the respiratory system, of which 360 are billable. The chapter is organized into 11 sections listed below, each linking to its code ranges and individual codes.
Chapter Coding Notes
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). 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)
Excludes2: 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)
Sections in This Chapter 11 ranges · 471 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About Chapter 10
Chapter 10 (J00–J99) covers a wide range of respiratory system diseases, including conditions affecting the nose, throat, lungs, and other parts of the breathing system. These codes are used to classify and report illnesses like infections, chronic respiratory diseases, and disorders related to breathing and the respiratory tract.
This chapter includes codes for acute respiratory infections such as the common cold and influenza, as well as chronic conditions like asthma, bronchitis, and chronic obstructive pulmonary disease (COPD). It also encompasses lung infections like pneumonia and tuberculosis, along with diseases that affect the pleura and other respiratory structures. Medical coders and healthcare professionals use these codes to document conditions that involve inflammation, obstruction, infections, or other respiratory impairments. These codes support accurate diagnosis, treatment planning, and billing related to respiratory health conditions, emphasizing the importance of precise classification for pulmonary and airway disorders.
Questions About This Page
How many codes are in the J00-J99 range?
The J00-J99 range contains 471 ICD-10-CM diagnosis codes in FY 2026. 360 of them are billable, and the rest are category headers that organize the chapter.
What conditions does J00-J99 cover?
The range covers diseases of the respiratory system. The sections listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
