J18.1
BillableLobar pneumonia, unspecified organism
Lobar pneumonia, unspecified organism
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.-)
Also Known As / Clinical Terms
SNOMED CT
- Unresolved pneumonia57702005
- Unresolved lobar pneumonia66429007
- Lung consolidation95436008
- Lobar pneumonia278516003
- Basal pneumonia300999006
- Lower lobe pneumonia300999006
- LLL - Left lower lobe pneumonia301000005
- LLZ - Left lower zone pneumonia301000005
- Left basal pneumonia301000005
- Left lower lobe pneumonia301000005
- Left lower zone pneumonia301000005
- Lobar pneumonia left lower lobe301000005
- Lobar pneumonia right lower lobe301001009
- RLL - Right lower lobe pneumonia301001009
- RLZ - Right lower zone pneumonia301001009
- Right basal pneumonia301001009
- Right lower lobe pneumonia301001009
- Right lower zone pneumonia301001009
- LUZ - Left upper zone pneumonia301002002
- Left upper lobe pneumonia301002002
- Left upper zone pneumonia301002002
- Lobar pneumonia left upper lobe301002002
- Lobar pneumonia right middle lobe301003007
- RMZ - Right middle zone pneumonia301003007
- Right middle lobe pneumonia301003007
- Right middle zone pneumonia301003007
- Lobar pneumonia right upper lobe301004001
- RUL (right upper lobe) pneumonia301004001
- RUZ (right upper zone) pneumonia301004001
- Right upper lobe pneumonia301004001
- Right upper zone pneumonia301004001
- Lingular pneumonia426696003
- Consolidation of lung present846749001
Frequently Asked Questions
What is ICD-10 code J18.1?
ICD-10-CM code J18.1 represents "Lobar pneumonia, unspecified organism". It is a billable/specific code that can be used on a claim.
Is J18.1 a billable code?
Yes, J18.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is J18.1 in?
J18.1 is in Chapter 10: Diseases of the Respiratory System (codes J00-J99).
What codes cannot be used with J18.1?
J18.1 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.
Are additional codes required with J18.1?
Yes, when using J18.1 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 SNOMED CT codes does J18.1 map to?
J18.1 maps to 12 SNOMED CT concepts: 300999006, 846749001, 301000005, 301002002, 426696003, and 7 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for J18.1?
J18.1 is linked to 1 UMLS Concept Unique Identifier: C0339966. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.