J45

Asthma

Non-billable header

J45 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes

  • allergic (predominantly) asthma
  • allergic bronchitis NOS
  • allergic rhinitis with asthma
  • atopic asthma
  • extrinsic allergic asthma
  • hay fever with asthma
  • idiosyncratic asthma
  • intrinsic nonallergic asthma
  • nonallergic asthma
  • 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).

Excludes1

Not coded here — never report together with this code.

  • bronchitis due to chemicals, gases, fumes and vapors (J68.0)
  • detergent asthma (J69.8)
  • miner's asthma (J60)
  • wheezing NOS (R06.2)
  • wood asthma (J67.8)

Excludes2

Not included here — may be reported together when both conditions exist.

  • 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)
  • cystic fibrosis (E84.-)
  • 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)

Use additional code

Add a code to identify the following, if applicable.

  • 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)
  • 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)

More specific codes J45

  • J45.2Mild intermittent asthmaHeader
  • J45.3Mild persistent asthmaHeader
  • J45.4Moderate persistent asthmaHeader
  • J45.5Severe persistent asthmaHeader
  • J45.9Other and unspecified asthmaHeader

Related codes

  • J40Bronchitis, not specified as acute or chronicBillable
  • J41Simple and mucopurulent chronic bronchitisHeader
  • J42Unspecified chronic bronchitisBillable
  • J43EmphysemaHeader
  • J44Other chronic obstructive pulmonary diseaseHeader
  • J4AChronic lung allograft dysfunctionHeader
  • J4BPulmonary mycetomaBillable
  • J47BronchiectasisHeader

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