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E03.9

Hypothyroidism, unspecified

Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 7 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.
Exclusions 3 never code together
E03code
Excludes1
  • iodine-deficiency related hypothyroidism (E00-E02)E00-E02
  • postprocedural hypothyroidism (E89.0)E89.0
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.

Instructional notes 2
E03.9code
Inclusion terms
  • Myxedema NOS
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.E05.8E07.0E16-E31E34.-
Index entries leading here 13
  • Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) D64.9
    • due to (in) (with)
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
    • in (due to)
      • hypothyroidism NEC E03.9
  • Arthropathy M12.9
    • in (due to)
  • Ataxia, ataxy, ataxic R27.0
  • Atrophy, atrophic (of)
    • systemic affecting central nervous system
  • Degeneration, degenerative
    • brain (cortical) (progressive) G31.9
  • Cataract (cortical) (immature) (incipient) H26.9
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) F03.90
    • in (due to)
      • hypothyroidism, acquired E03.9
        • with behavioral disturbance E03.9
  • Hoffmann's syndrome E03.9
  • Myopathy G72.9
  • Hypothyroidism (acquired) E03.9
  • Insufficiency, insufficient
    • thyroid (gland) (acquired) E03.9
  • Myxedema (adult) (idiocy) (infantile) (juvenile) E03.9
Alongside this code 7 same parent — E03
E03.0 Congenital hypothyroidism with diffuse goiter E03.1 Congenital hypothyroidism without goiter E03.2 Hypothyroidism due to meds and oth exogenous substances E03.3 Postinfectious hypothyroidism E03.4 Atrophy of thyroid (acquired) E03.5 Myxedema coma E03.8 Other specified hypothyroidism
Medications 1
17 Hypothyroidism 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

RX08HCC44

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

This code

Billable
yes
Code set
FY2026
Parent
E03
Block
E00-E07
Siblings
7

Present FY2024–FY2027.