ICD-10-CM Code Also Notes · Chapter 4 · FY 2027 E00-E89

Code Also Notes in Chapter 4: Endocrine, nutritional and metabolic 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 4 (E00-E89), notes printed in the chapter name other codes 27 times, and Code Also Notes anywhere in the Tabular List name the chapter’s codes 25 times, covering 23 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
27
References in Its Notes
25
References to Its Codes
23
Chapter Codes Named
E00-E89
Chapter 4
Chapter 4

Code Also Notes by the code that carries the note

15 of 15 shown
  • E20.810 Autosomal dominant hypocalcemia
  • E26.01 Conn's syndrome
  • E27.5 Adrenomedullary hyperfunction
    • malignant pheochromocytoma (C74.1-)
    • pheochromocytoma (benign) (D35.0-)
    • secondary hypertension (I15.2)
  • E34.0 Carcinoid syndrome applies to 3 codes
    • primary neuroendocrine tumors (C7A.-)
    • secondary neuroendocrine tumors (C7B.-)
  • E74.05 Lysosome-associated membrane protein 2 [LAMP2] deficiency
    • dilated cardiomyopathy (I42.0-)
    • obstructive hypertrophic cardiomyopathy (I42.1)
  • E83.01 Wilson's disease
    • associated Kayser Fleischer ring (H18.04-)
  • E83.820 Generalized arterial calcification of infancy with unspecified genetic causality
    • heart failure (I50.-)
    • other secondary hypertension (I15.8)
  • E83.821 ENPP1 deficiency causing generalized arterial calcification of infancy
    • heart failure (I50.-)
    • other secondary hypertension (I15.8)
  • E83.823 ABCC6 deficiency causing generalized arterial calcification of infancy
    • heart failure (I50.-)
    • other secondary hypertension (I15.8)
  • E84 Cystic fibrosis applies to 5 codes
    • exocrine pancreatic insufficiency (K86.81)
  • E85.0 Non-neuropathic heredofamilial amyloidosis
    • autoinflammatory syndromes (M04.-)
  • E87.20 Acidosis, unspecified
    • , if applicable, respiratory failure with hypercapnia (J96. with 5th character 2)
  • E88.02 Plasminogen deficiency
    • , if applicable, ligneous conjunctivitis (H10.51-)
  • E88.42 MERRF syndrome
    • progressive myoclonic epilepsy (G40.3-)
  • E88.43 Disorders of mitochondrial tRNA synthetases

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

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.