Is E29.1 a billable ICD-10-CM code?

Yes. E29.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E29.1 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).

What cannot be coded together with E29.1?

E29.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E29.1 (E29) and apply to it just the same.

E29.1

E29.1 — Testicular hypofunction

Billable / specific codeICD-10-CM

E29.1 is a billable, specific ICD-10-CM code for testicular hypofunction. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

postprocedural testicular hypofunction (E89.5)

Use additional code

Add a secondary code to capture the detail described below.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Defective biosynthesis of testicular androgen NOS
5-delta-Reductase deficiency (with male pseudohermaphroditism)
Testicular hypogonadism NOS

Excludes1 inherited from the categories above E29.1

These are not written on E29.1, but they bind it: a note on a category applies to every code beneath it. Billing E29.1 with anything listed here is a denial.

Written on E29 — Testicular dysfunction

androgen insensitivity syndrome (E34.5-)
azoospermia or oligospermia NOS (N46.0-N46.1)
isolated gonadotropin deficiency (E23.0)
Klinefelter's syndrome (Q98.0-Q98.1, Q98.4)

Risk adjustment

E29.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

E29.1 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57615Billing and Coding: Treatment of Males with Low Testosterone
A58828Billing and Coding: Treatment of Males with Low Testosterone

How E29.1 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E29.1.

Eunuchoidism
Panhypogonadism
Abnormal, abnormality, abnormalities›biosynthesis, testicular androgen
Defect, defective›biosynthesis, androgen(testicular)
Deficiency, deficient›5-alpha reductase(with male pseudohermaphroditism)
Failure, failed›Leydig's cell, adult
Failure, failed›seminiferous tubule, adult
Failure, failed›testicular endocrine function
Hypofunction›testicular
Hypogonadism›male
Hypogonadism›testicular(primary)
Infantile›testis

Code history

E29.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share E29. If E29.1 is not quite right, the correct code is usually one of these.

Questions about E29.1

Is E29.1 a billable ICD-10-CM code?: Yes. E29.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E29.1 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Disorders of other endocrine glands (E20-E35).
What cannot be coded together with E29.1?: E29.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E29.1 (E29) and apply to it just the same.