Specific code 2011 ICD-9-CM Diagnosis Code 243
Congenital hypothyroidism
  • Short description: Congenital hypothyroidsm.
  • ICD-9-CM 243 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 243 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2011 version of ICD-9-CM 243.
  • More recent version(s) of ICD-9-CM 243: 2012 2013 2014.
Disease Synonyms
  • Congenital iodine deficiency syndrome
  • Congenital iodine deficiency syndrome - mixed type
  • Congenital iodine deficiency syndrome - neurological type
  • Congenital iodine deficiency syndrome, mixed type
  • Congenital iodine deficiency syndrome, myxedematous
  • Congenital iodine deficiency syndrome, myxedematous ty
  • Congenital iodine deficiency syndrome, myxedematous type
  • Congenital iodine deficiency syndrome, neurological type
  • Endemic congenital iodine deficiency syndrome of myxedematous type
  • Endemic cretinism
  • Hypothyroidism, congenital
243 Excludes
  • congenital (dyshormonogenic) goiter (246.1)
Applies To
  • Congenital thyroid insufficiency
  • Cretinism (athyrotic) (endemic)
Use Additional
  • Use additional code to identify associated mental retardation
Convert to ICD-10-CM: 243 converts approximately to:
  • 2014 ICD-10-CM E00.9 Congenital iodine-deficiency syndrome, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 243:
  • Absence (organ or part) (complete or partial)
    • thyroid (gland) (surgical) 246.8
      • with hypothyroidism 244.0
      • cartilage, congenital 748.3
      • congenital 243
  • Agenesis - see also Absence, by site, congenital
    • thyroid (gland) 243
  • Aplasia - see also Agenesis
    • thyroid 243
  • Athyrea (acquired) (see also Hypothyroidism) 244.9
    • congenital 243
  • Athyreosis (congenital) 243
    • acquired - see Hypothyroidism
  • Athyroidism (acquired) (see also Hypothyroidism) 244.9
    • congenital 243
  • Atrophy, atrophic
    • thyroid (gland) 246.8
      • with
        • cretinism 243
        • myxedema 244.9
      • congenital 243
  • Cretin, cretinism (athyrotic) (congenital) (endemic) (metabolic) (nongoitrous) (sporadic) 243
    • goitrous (sporadic) 246.1
    • pelvis (dwarf type) (male type) 243
      • with disproportion (fetopelvic) 653.1
        • affecting fetus or newborn 763.1
        • causing obstructed labor 660.1
          • affecting fetus or newborn 763.1
  • Cretinoid degeneration 243
  • Deaf mutism (acquired) (congenital) NEC 389.7
    • endemic 243
  • Degeneration, degenerative
    • cretinoid 243
  • Goiter (adolescent) (colloid) (diffuse) (dipping) (due to iodine deficiency) (endemic) (euthyroid) (heart) (hyperplastic) (internal) (intrathoracic) (juvenile) (mixed type) (nonendemic) (parenchymatous) (plunging) (sporadic) (subclavicular) (substernal) 240.9
    • familial (with deaf-mutism) 243
  • Hypoplasia, hypoplasis 759.89
    • thyroid (gland) 243
  • Hypothyroidism (acquired) 244.9
    • congenital 243
  • Insufficiency, insufficient
    • thyroid (gland) (acquired) - see also Hypothyroidism
      • congenital 243
  • Myxedema (adult) (idiocy) (infantile) (juvenile) (thyroid gland) (see also Hypothyroidism) 244.9
    • congenital 243
  • Pendred's syndrome (familial goiter with deaf-mutism) 243
  • Subthyroidism (acquired) (see also Hypothyroidism) 244.9
    • congenital 243
  • Syndrome - see also Disease
    • Pendred's (familial goiter with deaf-mutism) 243
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 243 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.