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Home/Diagnosis/ICD-10 Coding for Thyroid Disorders

ICD-10 Coding for Thyroid Disorders

E03.9
E05.10

Complete ICD-10-CM coding and documentation guide for icd-10 coding for thyroid disorders includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Thyroid Disease
Thyroid Dysfunction
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Key Information: ICD-10 Coding for Thyroid Disorders

Essential facts and insights about ICD-10 Coding for Thyroid Disorders

Use ICD-10 code E03.9 for hypothyroidism, unspecified, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Hypothyroidism, unspecified

Billable Code
E03.9
Billable

Diagnostic Criteria

clinical:
  • • TSH >4.12 mIU/L
  • • Free T4 <0.8 ng/dL
documentation:
  • • Lack of specific cause for hypothyroidism

Applicable To

  • • Unspecified hypothyroidism

Important Notes

  • • Ensure documentation specifies if the hypothyroidism is post-surgical to avoid incorrect coding.

Thyrotoxicosis with toxic single thyroid nodule without crisis

Billable Code
E05.10
Billable

Diagnostic Criteria

clinical:
  • • TSH <0.01 mIU/L
  • • Presence of a toxic nodule on imaging

Applicable To

  • • Toxic single thyroid nodule

Important Notes

  • • Ensure documentation of nodule toxicity and absence of crisis.
Ancillary Codes

Additional codes that may be used with this diagnosis

G72.9

Myopathy, unspecified

Use to document muscle weakness associated with hypothyroidism.

I49.9

Cardiac arrhythmia, unspecified

Use to document arrhythmias associated with thyrotoxicosis.

Frequently Asked Questions

What is the ICD-10 code for unspecified hypothyroidism?

The ICD-10 code for unspecified hypothyroidism is E03.9. It is used when the cause of hypothyroidism is not specified.

How do you code postprocedural hypothyroidism?

Postprocedural hypothyroidism is coded as E89.0, used when hypothyroidism follows a surgical procedure on the thyroid.

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