What is the ICD-10 code for PMOS?

The ICD-10-CM code for PMOS (Polyendocrine Metabolic Ovarian Syndrome, the new name for PCOS since May 2026) is E28.2, “Polycystic ovarian syndrome”. The code is unchanged by the rename: coding systems index the condition, not the label, so E28.2 continues to be used.

Is the ICD-10 code for PCOS the same as for PMOS?

Yes. PMOS is the renamed condition, not a new diagnosis, so it maps to the same ICD-10-CM code as PCOS: E28.2. Your existing records, referrals, and billing remain valid during the transition.

What does E28.2 sit under in ICD-10?

E28.2 belongs to category E28, “Ovarian dysfunction”, within the endocrine, nutritional and metabolic chapter (E00–E89). E28.2 specifically covers polycystic ovarian syndrome, and includes the older terms sclerocystic ovary syndrome and Stein–Leventhal syndrome.

Does the PCOS to PMOS rename change my billing or insurance code?

No. In the US, ICD-10-CM E28.2 remains the operative code for claims and prior authorisations; in the UK, NHS coding continues under the same ICD-10 code. No administrative action is required from patients because of the rename.

PMOS / PCOS ICD-10 code: E28.2

A common admin question after the rename: does your diagnosis code change? Here is the exact ICD-10 code, what it covers, and why PMOS (the new name for PCOS) keeps the same code.

Published: July 13, 2026.

Who wrote this & how

Written by the pmos-pcos.com editorial team and checked against primary clinical guidelines (Endocrine Society 2023/2026, Monash International PCOS Guideline 2023, ESHRE 2023). We sell nothing, take no pharmaceutical or supplement funding, and cite every clinical claim. We do not diagnose or prescribe — this page prepares you for a conversation with a healthcare professional.

Last updated: July 13, 2026 · Editorial methodology · All cited sources

In short

The ICD-10-CM code for PMOS (formerly PCOS) is E28.2 — Polycystic ovarian syndrome. It sits under category E28 “Ovarian dysfunction” in the endocrine and metabolic chapter. The 2026 PCOS → PMOS rename does not change the code: coding systems index the condition, not its name, so E28.2 stays the operative billing code in both the US (ICD-10-CM) and the UK (NHS ICD-10).

What E28.2 covers

In ICD-10, E28.2 is the specific code for polycystic ovarian syndrome. It falls within category E28, “Ovarian dysfunction”, part of the chapter on endocrine, nutritional and metabolic diseases (E00–E89). The code also carries the older clinical synonyms sclerocystic ovary syndrome and Stein–Leventhal syndrome, which is why you may still see those terms on legacy records.

Because PMOS is a renaming of PCOS rather than a newly defined disease, it maps to the same code. Diagnostic criteria (the Rotterdam framework) and the underlying condition are unchanged — only the name is new.

Why the rename does not change the code

Classification systems are deliberately stable: they track the clinical entity so that records, research, and billing stay comparable over time. A change in preferred terminology does not trigger a new code on its own. That is why, in practice, your files, referrals, and prescriptions continue under E28.2 during the transition period, and no action is required from you as a patient.

Using the code: US and UK

In the United States, providers bill under ICD-10-CM, and E28.2 is the code attached to claims, prior authorisations, and lab orders for PMOS / PCOS. Having the diagnosis coded correctly on a request usually helps coverage for standard hormonal and metabolic tests — see our guide to PCOS lab tests.

In the United Kingdom, NHS records and Hospital Episode Statistics use ICD-10, and the same E28.2 code applies. NHS and NICE guidance is expected to adopt the PMOS terminology through 2026–2027, but the underlying code is unaffected — more detail on what the rename means in the UK.

What to do with this

If you are checking a letter, an insurance claim, or a test request, E28.2 is the code you should expect to see for PMOS / PCOS. If a form still says “PCOS”, that is normal and correct during the transition. To prepare for an appointment, our doctor summary tool can help you bring the right details.

Frequently asked questions

What is the ICD-10 code for PMOS?: The ICD-10-CM code for PMOS (Polyendocrine Metabolic Ovarian Syndrome, the new name for PCOS since May 2026) is E28.2, “Polycystic ovarian syndrome”. The code is unchanged by the rename: coding systems index the condition, not the label, so E28.2 continues to be used.
Is the ICD-10 code for PCOS the same as for PMOS?: Yes. PMOS is the renamed condition, not a new diagnosis, so it maps to the same ICD-10-CM code as PCOS: E28.2. Your existing records, referrals, and billing remain valid during the transition.
What does E28.2 sit under in ICD-10?: E28.2 belongs to category E28, “Ovarian dysfunction”, within the endocrine, nutritional and metabolic chapter (E00–E89). E28.2 specifically covers polycystic ovarian syndrome, and includes the older terms sclerocystic ovary syndrome and Stein–Leventhal syndrome.
Does the PCOS to PMOS rename change my billing or insurance code?: No. In the US, ICD-10-CM E28.2 remains the operative code for claims and prior authorisations; in the UK, NHS coding continues under the same ICD-10 code. No administrative action is required from patients because of the rename.

Going further

References

The coding details summarised above come from the official ICD-10 classification:

WHO ICD-10, category E28 “Ovarian dysfunction” (E28.2 polycystic ovarian syndrome) — icd.who.int
US CDC / NCHS, ICD-10-CM code E28.2 — cdc.gov

Educational information only. This page explains how the ICD-10 code for PMOS / PCOS is used — it is not medical, billing, or legal advice. For a decision about your records, claim, or coverage, check with your clinician, coder, or insurer.