Code Also Notes in Chapter 1: Certain infectious and parasitic diseases ICD-10-CM
A Code Also note means two codes may be needed to fully describe a condition; it gives no sequencing direction. In Chapter 1 (A00-B99), notes printed in the chapter name other codes 9 times, and Code Also Notes anywhere in the Tabular List name the chapter’s codes 20 times, covering 20 distinct codes, categories and ranges. Switch views to read the list either way.
Code Also Notes by the code that carries the note
- B37.1 Pulmonary candidiasis
- pulmonary mycetoma (J4B)
- B38.0 Acute pulmonary coccidioidomycosis
- pulmonary mycetoma (J4B)
- B38.1 Chronic pulmonary coccidioidomycosis
- pulmonary mycetoma (J4B)
- B38.2 Pulmonary coccidioidomycosis, unspecified
- pulmonary mycetoma (J4B)
- B88.01 Infestation by Demodex mites
- , if applicable, eyelid inflammation (H01.8-)
- D81.82 Activated Phosphoinositide 3-kinase Delta Syndrome [APDS]: other infections (A00-B99)
- D61.82 Myelophthisis: tuberculosis (A15.-)
- D81.82 Activated Phosphoinositide 3-kinase Delta Syndrome [APDS]: herpes virus infections (B00.-)
- B10.89 Other human herpesvirus infection
- D47.Z2 Castleman disease: , if applicable, human herpesvirus 8 infection (B10.89)
- B15.9 Hepatitis A without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- K74 Fibrosis and cirrhosis of liver: , if applicable, viral hepatitis (acute) (chronic) (B15-B19)
- B16.1 Acute hepatitis B with delta-agent without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- B16.9 Acute hepatitis B without delta-agent and without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- B17.10 Acute hepatitis C without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- B19.10 Unspecified viral hepatitis B without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- B19.20 Unspecified viral hepatitis C without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- B19.9 Unspecified viral hepatitis without hepatic coma
- K76.82 Hepatic encephalopathy: viral hepatitis without hepatic coma (B15.9, B16.1, B16.9, B17.10, B19.10, B19.20, B19.9)
- B20 Human immunodeficiency virus [HIV] disease
- I27.21 Secondary pulmonary arterial hypertension: human immunodeficiency virus [HIV] disease (B20)
- B33.23 Viral pericarditis
- M35.81 Multisystem inflammatory syndrome: viral pericarditis (B33.23)
- B33.24 Viral cardiomyopathy
- M35.81 Multisystem inflammatory syndrome: viral cardiomyopathy (B33.24)
- B37.1 Pulmonary candidiasis
- J4B Pulmonary mycetoma: pulmonary candidiasis (B37.1)
- B38.1 Chronic pulmonary coccidioidomycosis
- J4B Pulmonary mycetoma: chronic pulmonary coccidioidomycosis (B38.1)
- J4B Pulmonary mycetoma: aspergillosis (B44.-)
- I27.21 Secondary pulmonary arterial hypertension: schistosomiasis (B65.-)
- B88.01 Infestation by Demodex mites
- H01.8 Other specified inflammations of eyelid: , if applicable, infestation by Demodex mites (B88.01)
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 Also Notes anywhere in the Tabular List, including notes in other chapters.
Questions About Code Also Notes
What does a Code Also note mean?
A Code Also note instructs that two codes may be required to fully describe a condition, but it does not give sequencing direction (Section I.A.17). The FY 2027 Tabular List has 689 of them; 495 name other codes, with 538 references to 349 distinct codes, categories and ranges.
Which code goes first with a Code Also note?
The note does not decide it. Sequencing depends on the circumstances of the encounter: normally the condition that is the main reason for the visit goes first.
Related References
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.
