J18
Non-billablePneumonia, unspecified organism
Pneumonia, unspecified organism
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- 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)
- allergic or eosinophilic pneumonia (J82)
- aspiration pneumonia NOS (J69.0)
- meconium pneumonia (P24.01)
- neonatal aspiration pneumonia (P24.-)
- pneumonia due to solids and liquids (J69.-)
- congenital pneumonia (P23.9)
- lipid pneumonia (J69.1)
- rheumatic pneumonia (I00)
- ventilator associated pneumonia (J95.851)
- abscess of lung with pneumonia (J85.1)
- aspiration pneumonia due to anesthesia during labor and delivery (O74.0)
- aspiration pneumonia due to anesthesia during pregnancy (O29)
- aspiration pneumonia due to anesthesia during puerperium (O89.0)
- aspiration pneumonia due to solids and liquids (J69.-)
- pneumonitis due to external agents (J67-J70)
Code First
The underlying condition must be sequenced before this code
Use Additional Code
Additional codes that should follow this code
- 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, if applicable, to identify resistance to antimicrobial drugs (Z16.-)
Code Also
A second code may be required; sequencing depends on circumstances
- , if applicable, any associated condition such as:
- aspiration pneumonia (J69.-)
Child Codes (5)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code J18?
ICD-10-CM code J18 represents "Pneumonia, unspecified organism". It is a non-billable header code — use a more specific child code for billing purposes.
Is J18 a billable code?
No, J18 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under J18.
What chapter is J18 in?
J18 is in Chapter 10: Diseases of the Respiratory System (codes J00-J99).
What codes cannot be used with J18?
J18 has Excludes1 notes indicating codes that cannot be used together with it, including: congenital pneumonia (P23.0); drug-induced interstitial lung disorder (J70.2-J70.4); interstitial pneumonia NOS (J84.9); and 3 more.
What are the subcategories under J18?
J18 has 5 child codes, including: J18.0 (Bronchopneumonia, unspecified organism), J18.1 (Lobar pneumonia, unspecified organism), J18.2 (Hypostatic pneumonia, unspecified organism), J18.8 (Other pneumonia, unspecified organism), and 1 more.
Are additional codes required with J18?
Yes, when using J18 you should also code: 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, if applicable, to identify resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for J18?
J18 is linked to 1 UMLS Concept Unique Identifier: C0339951. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.