Code Also Notes in Chapter 17: Congenital malformations, deformations and chromosomal abnormalities 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 17 (Q00-QA1), notes printed in the chapter name other codes 22 times, and Code Also Notes anywhere in the Tabular List name the chapter’s codes 12 times, covering 11 distinct codes, categories and ranges. Switch views to read the list either way.
Code Also Notes by the code that carries the note
- Q21.8 Other congenital malformations of cardiac septa
- Q23.81 Bicuspid aortic valve
- Q85.81 PTEN hamartoma tumor syndrome
- , if applicable, genetic susceptibility to malignant neoplasm (Z15.0-)
- Q87.85 MED13L syndrome
- associated physical condition(s), such as atrioventricular septal defect (Q21.2-)
- Q92.5 Duplications with other complex rearrangements
- any associated deletions due to unbalanced translocations, inversions and insertions (Q93.7)
- Q93.7 Deletions with other complex rearrangements
- any associated duplications due to unbalanced translocations, inversions and insertions (Q92.5)
- QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants applies to 13 codes
- Q21.0 Ventricular septal defect
- I27.83 Eisenmenger's syndrome: ventricular septal defect (Q21.0)
- I27.83 Eisenmenger's syndrome: atrial septal defect (Q21.1-)
- Q90 Down syndrome: associated physical condition(s), such as atrioventricular septal defect (Q21.2-)
- Q21.8 Other congenital malformations of cardiac septa
- I27.83 Eisenmenger's syndrome: Eisenmenger's defect (Q21.8)
- Q87.85 MED13L syndrome: congenital malformations of cardiac septa (Q21.-)
- Q23.81 Bicuspid aortic valve
- I35 Nonrheumatic aortic valve disorders: , if applicable, bicuspid aortic valve (Q23.81)
- Q25.0 Patent ductus arteriosus
- I27.83 Eisenmenger's syndrome: patent ductus arteriosus (Q25.0)
- Q30-Q34 Congenital malformations of nose to Other congenital malformations of respiratory system 31 codes
- P28 Other respiratory conditions originating in the perinatal period: , if applicable, congenital malformations of the respiratory system (Q30-Q34)
- Q92.5 Duplications with other complex rearrangements
- Q93.7 Deletions with other complex rearrangements: any associated duplications due to unbalanced translocations, inversions and insertions (Q92.5)
- Q93.7 Deletions with other complex rearrangements
- Q92.5 Duplications with other complex rearrangements: any associated deletions due to unbalanced translocations, inversions and insertions (Q93.7)
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.
