J45.2
⚠ Non-billable (Header)Mild intermittent asthma
Diseases of the respiratory system (J00-J99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • detergent asthma (J69.8)
- • miner's asthma (J60)
- • wheezing NOS (R06.2)
- • wood asthma (J67.8)
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • asthma with chronic obstructive pulmonary disease (J44.89)
- • chronic asthmatic (obstructive) bronchitis (J44.89)
- • chronic obstructive asthma (J44.89)
- • other specified chronic obstructive pulmonary disease (J44.89)
📋 Code Instructions
inherited- • code to identify:
- • eosinophilic asthma (J82.83)
- • 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)
Child Codes (3)
Clinical Description
ICD-10-CM code J45.2 represents mild intermittent asthma. This code falls under the Diseases of the respiratory system (J00-J99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 5-character code at the 4th level of specificity. There are 3 more specific child codes under J45.2. Coders should note that J45.2 has 4 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code J45.2?
ICD-10-CM code J45.2 is "Mild intermittent asthma". It belongs to the category: Diseases of the respiratory system (J00-J99).
Is J45.2 a billable ICD-10 code?
No, J45.2 is a non-billable header code. A more specific child code must be used for billing.
What codes are excluded with J45.2?
J45.2 has 4 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Can J45.2 be coded with other codes?
J45.2 has 4 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in J45
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)