H20.821 — Vogt-Koyanagi syndrome, right eye
Is H20.821 billable?
Yes — H20.821 is billable for FY2027. H20.821 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. H20.821 may be submitted for encounters from October 1, 2026 through September 30, 2027.
H20.821 at a glance
| Code | H20.821 |
|---|---|
| Description | Vogt-Koyanagi syndrome, right eye |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does H20.821 group to?
H20.821 sits in MDC 02 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 124Other Disorders of the Eye with MCC or Thrombolytic Agentmedical
- 125Other Disorders of the Eye without MCCmedical
How is H20.821 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under H20.82, the nearest indexed parent of H20.821. Use them to find the family, then select the specific code.
- Vogt-Koyanagi syndrome
- Iridocyclitis › Vogt-Koyanagi
- Syndrome › Vogt-Koyanagi
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H20.821, but a patient may have both at the same time. When documentation supports it, H20.821 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury (trauma) of eye and orbit (S05.-)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)
Excludes2 — not included here — inherited from H20.8
The conditions below are not part of H20.821, but a patient may have both at the same time. When documentation supports it, H20.821 and the excluded code may both be reported.
How long has H20.821 existed?
H20.821 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.