E71.42

Carnitine deficiency due to inborn errors of metabolism

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 8 never code together

E71.4code

Excludes1

Muscle carnitine palmitoyltransferase deficiency (E71.314)E71.314

E70-E88block

Excludes1

androgen insensitivity syndrome (E34.5-)E34.5-
congenital adrenal hyperplasia (E25.0)E25.0
hemolytic anemias attributable to enzyme disorders (D55.-)D55.-
Marfan syndrome (Q87.4-)Q87.4-
5-alpha-reductase deficiency (E29.1)E29.1

Excludes2

Ehlers-Danlos syndromes (Q79.6-)Q79.6-

E00-E89chapter

Excludes1

transitory endocrine and metabolic disorders specific to newborn (P70-P74)P70-P74

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 2

E71.42code

Code also

associated inborn error or metabolism

E00-E89chapter

Notes

All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.E05.8 E07.0 E16-E31 E34.-

Index entries leading here 1

Deficiency, deficient
- carnitine E71.40
  - due to
    - inborn errors of metabolism E71.42

Alongside this code 4 same parent — E71.4

E71.40 Disorder of carnitine metabolism, unspecified E71.41 Primary carnitine deficiency E71.43 Iatrogenic carnitine deficiency E71.44 Other secondary carnitine deficiency category

Medications 5

223 Metabolism, Inborn Errors drugs 40 Metal Metabolism, Inborn Errors drugs 32 Carbohydrate Metabolism, Inborn Errors drugs 31 Lipid Metabolism, Inborn Errors drugs 11 Steroid Metabolism, Inborn Errors drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC23 ESRD21HCC23 ESRD24HCC23 RX08HCC43

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: E71.4
Block: E70-E88
Siblings: 4

Present FY2024–FY2027.