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ICD-10-CM 2027

ICD-10 code for adrenal absence

Q89.1

Congenital malformations of adrenal gland

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Absence (of) (organ or part) (complete or partial) › adrenal (gland) (congenital)”. Page updated September 29, 2026.

About coding adrenal absence

The ICD-10-CM code for adrenal absence is Q89.1 (Congenital malformations of adrenal gland). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q89.1.

Within Q89 (other congenital malformations, not elsewhere classified), Q89.1 is specifically for congenital malformations of adrenal gland. Related codes cover congenital absence and malformations of spleen (Q89.0), congenital malformations of other endocrine glands (Q89.2), Situs inversus (Q89.3), conjoined twins (Q89.4), multiple congenital malformations, not elsewhere classified (Q89.7), other specified congenital malformations (Q89.8) and congenital malformation, unspecified (Q89.9).

Don't report Q89.1 together with the conditions in its Excludes1 note: adrenogenital disorders (E25.-) and congenital adrenal hyperplasia (E25.0).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

More specific adrenal absence codes (official index)

  • acquired E89.6 — Postprocedural adrenocortical (-medullary) hypofunction

Don't confuse with (Excludes1 for Q89.1)

  • adrenogenital disorders (E25.-)
  • congenital adrenal hyperplasia (E25.0)

Common questions about adrenal absence ICD-10 codes

What is the ICD-10 code for adrenal absence?

Q89.1 — Congenital malformations of adrenal gland. More specific codes apply when the documentation supports them: E89.6.

What is the ICD-10 code for acquired adrenal absence?

E89.6 — Postprocedural adrenocortical (-medullary) hypofunction.

Is Q89.1 billable?

Yes. Q89.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Q89.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Q89.1 as a principal diagnosis.

Is Q89.1 a CC or MCC?

No. Q89.1 is neither a CC nor an MCC under MS-DRG v44.0.