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Home/Diagnosis/ICD-10 Coding for Subclinical Hypothyroidism

ICD-10 Coding for Subclinical Hypothyroidism

E02
E03.9

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

Also Known as:
Mild Hypothyroidism
Early Hypothyroidism
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Key Information: ICD-10 Coding for Subclinical Hypothyroidism

Essential facts and insights about ICD-10 Coding for Subclinical Hypothyroidism

Use ICD-10 code E02 for subclinical iodine-deficiency hypothyroidism, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Subclinical iodine-deficiency hypothyroidism

Billable Code
E02
Billable

Diagnostic Criteria

clinical:
  • • TSH levels between 4.5 and 10 mIU/L with normal T4
documentation:
  • • Explicit mention of iodine deficiency

Applicable To

  • • Subclinical hypothyroidism due to iodine deficiency

Important Notes

  • • Ensure documentation specifies iodine deficiency to use E02.

Hypothyroidism, unspecified

Billable Code
E03.9
Billable

Diagnostic Criteria

clinical:
  • • TSH levels above normal range
  • • Normal or low free T4 levels

Applicable To

  • • Unspecified hypothyroidism

Important Notes

  • • This code is used when the specific cause of hypothyroidism is not documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z13.29

Screening for thyroid dysfunction

Use when screening for thyroid issues without a prior diagnosis.

Frequently Asked Questions

What is the ICD-10 code for subclinical hypothyroidism?

The ICD-10 code for subclinical hypothyroidism due to iodine deficiency is E02. For unspecified causes, use E03.9.

When should E02 be used for hypothyroidism?

Use E02 when subclinical hypothyroidism is confirmed to be due to iodine deficiency, with documented TSH and T4 levels.

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