2020 ICD-10-CM Diagnosis Code E05.91

Thyrotoxicosis, unspecified with thyrotoxic crisis or storm

    2016 2017 2018 2019 2020 Billable/Specific Code
  • E05.91 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM E05.91 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of E05.91 - other international versions of ICD-10 E05.91 may differ.
The following code(s) above E05.91 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to E05.91:
  • E00-E89
    2020 ICD-10-CM Range E00-E89

    Endocrine, nutritional and metabolic diseases

    Note
    • 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.
    Type 1 Excludes
    • transitory endocrine and metabolic disorders specific to newborn (P70-P74)
    Endocrine, nutritional and metabolic diseases
  • E05
    ICD-10-CM Diagnosis Code E05

    Thyrotoxicosis [hyperthyroidism]

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • chronic thyroiditis with transient thyrotoxicosis (E06.2)
    • neonatal thyrotoxicosis (P72.1)
    Thyrotoxicosis [hyperthyroidism]
  • E05.9
    ICD-10-CM Diagnosis Code E05.9

    Thyrotoxicosis, unspecified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Hyperthyroidism NOS
    Thyrotoxicosis, unspecified
Approximate Synonyms
  • Thyrotoxic crisis
  • Thyrotoxicosis with crisis
ICD-10-CM E05.91 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 011 Tracheostomy for face, mouth & neck diagnoses or laryngectomy with mcc
  • 012 Tracheostomy for face, mouth & neck diagnoses or laryngectomy with cc
  • 013 Tracheostomy for face, mouth & neck diagnoses or laryngectomy without cc/mcc
  • 643 Endocrine disorders with mcc
  • 644 Endocrine disorders with cc
  • 645 Endocrine disorders without cc/mcc

Convert E05.91 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to E05.91:
  • Cardiomyopathy (familial) (idiopathic) I42.9
    ICD-10-CM Diagnosis Code I42.9

    Cardiomyopathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Cardiomyopathy (primary) (secondary) NOS
    • metabolic E88.9
      ICD-10-CM Diagnosis Code E88.9

      Metabolic disorder, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • thyrotoxic E05.90
        ICD-10-CM Diagnosis Code E05.90

        Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with thyroid storm E05.91
    • thyrotoxic E05.90
      ICD-10-CM Diagnosis Code E05.90

      Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

        2016 2017 2018 2019 2020 Billable/Specific Code
      • with thyroid storm E05.91
  • Chloasma (skin) (idiopathic) (symptomatic) L81.1
    ICD-10-CM Diagnosis Code L81.1

    Chloasma

      2016 2017 2018 2019 2020 Billable/Specific Code
    • eyelid H02.719
      ICD-10-CM Diagnosis Code H02.719

      Chloasma of unspecified eye, unspecified eyelid and periocular area

        2016 2017 2018 2019 2020 Billable/Specific Code
      • hyperthyroid E05.90
        ICD-10-CM Diagnosis Code E05.90

        Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with thyroid storm E05.91
  • Disease, diseased - see also Syndrome
    • heart (organic) I51.9
      ICD-10-CM Diagnosis Code I51.9

      Heart disease, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • hyperthyroid E05.90
        - see also Hyperthyroidism
        ICD-10-CM Diagnosis Code E05.90

        Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with thyroid storm E05.91
      • thyrotoxic E05.90
        - see also Thyrotoxicosis
        ICD-10-CM Diagnosis Code E05.90

        Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with thyroid storm E05.91
    • thyroid (gland) E07.9
      ICD-10-CM Diagnosis Code E07.9

      Disorder of thyroid, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • heart E05.90
        - see also Hyperthyroidism
        ICD-10-CM Diagnosis Code E05.90

        Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with thyroid storm E05.91
  • Failure, failed
  • Hyperthyroidism (latent) (pre-adult) (recurrent) E05.90
    ICD-10-CM Diagnosis Code E05.90

    Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

      2016 2017 2018 2019 2020 Billable/Specific Code
  • Myasthenia G70.9
    ICD-10-CM Diagnosis Code G70.9

    Myoneural disorder, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • syndrome
      • in
        • thyrotoxicosis E05.90
          ICD-10-CM Diagnosis Code E05.90

          Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

            2016 2017 2018 2019 2020 Billable/Specific Code
          • with thyroid storm E05.91
  • Myocardiopathy (congestive) (constrictive) (familial) (hypertrophic nonobstructive) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic) I42.9
    - see also Cardiomyopathy
    ICD-10-CM Diagnosis Code I42.9

    Cardiomyopathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Cardiomyopathy (primary) (secondary) NOS
    • thyrotoxic E05.90
      ICD-10-CM Diagnosis Code E05.90

      Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

        2016 2017 2018 2019 2020 Billable/Specific Code
      • with storm E05.91
  • Myopathy G72.9
    ICD-10-CM Diagnosis Code G72.9

    Myopathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • in (due to)
      • thyrotoxicosis (hyperthyroidism) E05.90
        ICD-10-CM Diagnosis Code E05.90

        Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

          2016 2017 2018 2019 2020 Billable/Specific Code
        • with thyroid storm E05.91
  • Myxedema (adult) (idiocy) (infantile) (juvenile) E03.9
    - see also Hypothyroidism
    ICD-10-CM Diagnosis Code E03.9

    Hypothyroidism, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Myxedema NOS
    • circumscribed E05.90
      ICD-10-CM Diagnosis Code E05.90

      Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

        2016 2017 2018 2019 2020 Billable/Specific Code
      • with storm E05.91
    • localized (pretibial) E05.90
      ICD-10-CM Diagnosis Code E05.90

      Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

        2016 2017 2018 2019 2020 Billable/Specific Code
      • with storm E05.91
  • Neuropathy, neuropathic G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Neuropathy NOS
    • peripheral (nerve) G62.9
      - see also Polyneuropathy
      ICD-10-CM Diagnosis Code G62.9

      Polyneuropathy, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Neuropathy NOS
      • autonomic G90.9
        ICD-10-CM Diagnosis Code G90.9

        Disorder of the autonomic nervous system, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • in (due to)
          • hyperthyroidism E05.90
            ICD-10-CM Diagnosis Code E05.90

            Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

              2016 2017 2018 2019 2020 Billable/Specific Code
            • with thyroid storm E05.91
  • Syndrome - see also Disease
    • myasthenic G70.9
      ICD-10-CM Diagnosis Code G70.9

      Myoneural disorder, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • in
        • thyrotoxicosis (hyperthyroidism) E05.90
          ICD-10-CM Diagnosis Code E05.90

          Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

            2016 2017 2018 2019 2020 Billable/Specific Code
          • with thyroid storm E05.91
  • Thyrotoxic
    • heart disease or failure E05.90
      - see also Thyrotoxicosis
      ICD-10-CM Diagnosis Code E05.90

      Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

        2016 2017 2018 2019 2020 Billable/Specific Code
      • with thyroid storm E05.91
  • Thyrotoxicosis (recurrent) E05.90
    ICD-10-CM Diagnosis Code E05.90

    Thyrotoxicosis, unspecified without thyrotoxic crisis or storm

      2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To E05.91
E05.30 …… without thyrotoxic crisis or storm
E05.31 …… with thyrotoxic crisis or storm
E05.4 Thyrotoxicosis factitia
E05.40 …… without thyrotoxic crisis or storm
E05.41 …… with thyrotoxic crisis or storm
E05.8 Other thyrotoxicosis
E05.80 …… without thyrotoxic crisis or storm
E05.81 …… with thyrotoxic crisis or storm
E05.9 Thyrotoxicosis, unspecified
E05.90 …… without thyrotoxic crisis or storm
E05.91 …… with thyrotoxic crisis or storm
E06 Thyroiditis
E06.0 Acute thyroiditis
E06.1 Subacute thyroiditis
E06.2 Chronic thyroiditis with transient thyrotoxicosis
E06.3 Autoimmune thyroiditis
E06.4 Drug-induced thyroiditis
E06.5 Other chronic thyroiditis
E06.9 Thyroiditis, unspecified
E07 Other disorders of thyroid
E07.0 Hypersecretion of calcitonin

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.