H31.409 — Unspecified choroidal detachment, unspecified eye
Is H31.409 billable?
Yes, but H31.409 will trip a Medicare edit. H31.409 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists H31.409 under Medicare Code Editor edit 20, “Unspecified code” — meaning a code specifying laterality (right, left or bilateral) exists in the same family. On an inpatient claim this triggers the edit, because CMS holds that there are very limited circumstances in which laterality cannot be documented.
H31.409 at a glance
| Code | H31.409 |
|---|---|
| Description | Unspecified choroidal detachment, unspecified eye |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to H31.409?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name H31.409 directly.
A code specifying laterality (right, left or bilateral) exists in the same family. CMS holds that there are very limited circumstances in which laterality cannot be documented.
Which MS-DRGs does H31.409 group to?
H31.409 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
As a secondary diagnosis, H31.409 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is H31.409 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under H31.40, the nearest indexed parent of H31.409. Use them to find the family, then select the specific code.
- Detachment › choroid
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H31.409, but a patient may have both at the same time. When documentation supports it, H31.409 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)
How long has H31.409 existed?
H31.409 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.