1. ICD-10-CM Codes
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2. J00-J99
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3. J09-J18
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4. J18-
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5. 2023 ICD-10-CM Diagnosis Code J18.9

2023 ICD-10-CM Diagnosis Code J18.9

Pneumonia, unspecified organism

2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

• J18.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM J18.9 became effective on October 1, 2022.
• This is the American ICD-10-CM version of J18.9 - other international versions of ICD-10 J18.9 may differ.

• Atypical pneumonia
• Bilateral basal pneumonia
• Bilateral pneumonia
• Chronic pneumonia
• Community acquired pneumonia
• Drug induced pneumonitis
• Fungal pneumonia
• Healthcare associated pneumonia
• Nosocomial pneumonia
• Pneumonia
• Pneumonia after surgery
• Pneumonia due to fungus
• Pneumonia, atypical
• Pneumonitis
• Post obstructive pneumonia
• Postobstructive pneumonia
• Postoperative pneumonia
• Recurrent pneumonia

• (noo-mone-ya) an inflammatory infection that occurs in the lung.
• A disorder characterized by inflammation focally or diffusely affecting the lung parenchyma.
• A severe inflammation of the lungs in which the alveoli (tiny air sacs) are filled with fluid. This may cause a decrease in the amount of oxygen that blood can absorb from air breathed into the lung. Pneumonia is usually caused by infection but may also be caused by radiation therapy, allergy, or irritation of lung tissue by inhaled substances. It may involve part or all of the lungs.
• An acute, acute and chronic, or chronic inflammation focally or diffusely affecting the lung parenchyma, due to infections (viruses, fungi, mycoplasma, or bacteria), treatment (e.g. Radiation), or exposure (inhalation) to chemicals. Symptoms include cough, shortness of breath, fevers, chills, chest pain, headache, sweating, and weakness.
• Inflammation of any part, segment or lobe, of the lung parenchyma.
• Inflammation of the lungs with consolidation and exudation.
• Pneumonia is an inflammation of the lung, usually caused by an infection. Three common causes are bacteria, viruses and fungi. You can also get pneumonia by accidentally inhaling a liquid or chemical. People most at risk are older than 65 or younger than 2 years of age, or already have health problems. If you have pneumonia, you may have difficulty breathing and have a cough and a fever. A physical exam and history can help determine if you have pneumonia. Chest x-rays and blood tests can help determine what is wrong. Treatment depends on what made you sick. If bacteria are the cause, antibiotics should help. Viral pneumonia may get better with rest and drinking liquids.preventing pneumonia is always better than treating it. The best preventive measures include washing your hands frequently, not smoking, and wearing a mask when cleaning dusty or moldy areas. There is a vaccine for pneumococcal pneumonia, a bacterial infection which accounts for up to a quarter of all pneumonias.

• 193 Simple pneumonia and pleurisy with mcc
• 194 Simple pneumonia and pleurisy with cc
• 195 Simple pneumonia and pleurisy without cc/mcc
• 791 Prematurity with major problems
• 793 Full term neonate with major problems
• 974 Hiv with major related condition with mcc
• 975 Hiv with major related condition with cc
• 976 Hiv with major related condition without cc/mcc

Convert J18.9 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change

• Type 1 Excludes: J16
  ICD-10-CM Diagnosis Code J16

  Pneumonia due to other infectious organisms, not elsewhere classified

  2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

  Code First

  • associated influenza, if applicable (J09.X1, J10.0-, J11.0-)

  Code Also

  • associated abscess, if applicable (J85.1)

  Type 1 Excludes

  • congenital pneumonia (P23.-)
  • ornithosis (A70)
  • pneumocystosis (B59)
  • pneumonia NOS (J18.9)

• Infection, infected, infective (opportunistic) B99.9
  ICD-10-CM Diagnosis Code B99.9

  Unspecified infectious disease

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • lung J18.9 - see also Pneumonia
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
  • atypical NEC J18.9

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.