ICD-10-CM Code First Notes · Chapter 10 · FY 2027 J00-J99

Code First Notes in Chapter 10: Diseases of the respiratory system ICD-10-CM

A Code First note means the underlying condition named in the note is sequenced before this code. In Chapter 10 (J00-J99), notes printed in the chapter name other codes 75 times, and Code First Notes anywhere in the Tabular List name the chapter’s codes 35 times, covering 20 distinct codes, categories and ranges. Switch views to read the list either way.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
75
References in Its Notes
35
References to Its Codes
20
Chapter Codes Named
J00-J99
Chapter 10
Chapter 10

Code First Notes by the code that carries the note

27 of 27 shown
  • J12 Viral pneumonia, not elsewhere classified applies to 8 codes
  • J12.82 Pneumonia due to coronavirus disease 2019
  • J13 Pneumonia due to Streptococcus pneumoniae
  • J14 Pneumonia due to Hemophilus influenzae
  • J15 Bacterial pneumonia, not elsewhere classified applies to 14 codes
  • J16 Pneumonia due to other infectious organisms, not elsewhere classified applies to 2 codes
  • J17 Pneumonia in diseases classified elsewhere
  • J18 Pneumonia, unspecified organism applies to 5 codes
  • J34.82 Nasal valve collapse applies to 7 codes
    • deviated nasal septum (J34.2)
  • J44.81 Bronchiolitis obliterans and bronchiolitis obliterans syndrome
    • complication of bone marrow transplant (T86.09)
    • complication of stem cell transplant (T86.5)
    • heart-lung transplant rejection (T86.31)
    • lung transplant rejection (T86.810)
    • other complications of heart-lung transplant (T86.39)
    • other complications of lung transplant (T86.818)
  • J4A Chronic lung allograft dysfunction applies to 3 codes
    • heart-lung transplant rejection (T86.31)
    • lung transplant rejection (T86.810)
    • other complications of heart-lung transplant (T86.39)
    • other complications of lung transplant (T86.818)
  • J68 Respiratory conditions due to inhalation of chemicals, gases, fumes and vapors applies to 7 codes
  • J69.1 Pneumonitis due to inhalation of oils and essences
    • (T51-T65) to identify substance
  • J69.8 Pneumonitis due to inhalation of other solids and liquids
    • (T51-T65) to identify substance
  • J70.5 Respiratory conditions due to smoke inhalation
  • J70.8 Respiratory conditions due to other specified external agents
    • (T51-T65) to identify the external agent
  • J70.9 Respiratory conditions due to unspecified external agent
    • (T51-T65) to identify the external agent
  • J82.83 Eosinophilic asthma
    • mild intermittent asthma (J45.2-)
    • mild persistent asthma (J45.3-)
    • moderate persistent asthma (J45.4-)
    • severe persistent asthma (J45.5-)
  • J84.03 Idiopathic pulmonary hemosiderosis
    • disorders of iron metabolism (E83.1-)
  • J84.170 Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere
    • lung diseases due to external agents (J60-J70)
    • rheumatoid arthritis (M05.00-M06.9)
    • sarcoidosis (D86.-)
    • systemic connective tissue disorders (M30-M36)
  • J84.178 Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere
  • J84.89 Other specified interstitial pulmonary diseases
    • poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy
  • J91.0 Malignant pleural effusion
  • J91.8 Pleural effusion in other conditions classified elsewhere
  • J93.12 Secondary spontaneous pneumothorax
    • catamenial pneumothorax due to endometriosis (N80.B-)
    • cystic fibrosis (E84.-)
    • eosinophilic pneumonia (J82.81-J82.82)
    • lymphangioleiomyomatosis (J84.81)
    • malignant neoplasm of bronchus and lung (C34.-)
    • Marfan syndrome (Q87.4-)
    • pneumonia due to Pneumocystis carinii (B59)
    • secondary malignant neoplasm of lung (C78.0-)
    • spontaneous rupture of the esophagus (K22.3)
  • J98.51 Mediastinitis
    • underlying condition, if applicable, such as postoperative mediastinitis (T81.-)
  • J99 Respiratory disorders in diseases classified elsewhere

The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Code First Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Code First Notes

What does a Code First note mean?

A Code First note means the underlying condition named in the note is sequenced before the code that carries the note. Under the etiology/manifestation convention, a “code first” note appears at the manifestation code and a “use additional code” note at the etiology code (Section I.A.13). The FY 2027 Tabular List has 810 of them; 600 name other codes, with 736 references to 429 distinct codes, categories and ranges.

Can a code with a Code First note be the principal diagnosis?

Not when it is a manifestation code. Codes titled “in diseases classified elsewhere” are never permitted as the first-listed or principal diagnosis; they must follow the underlying condition. The etiology and manifestation page lists them all.

Related References

ICD-10-CM Official GuidelinesICD-10-CM Code LookupICD-10-CM Codes ListCode Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.