S04.02XS — Injury of optic chiasm, sequela
Is S04.02XS billable?
Yes — S04.02XS is billable for FY2027. S04.02XS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S04.02XS may be submitted for encounters from October 1, 2026 through September 30, 2027.
S04.02XS at a glance
| Code | S04.02XS |
|---|---|
| Description | Injury of optic chiasm, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in S04.02XS?
In S04.02XS, the 7th character S means sequela. The 7th character is required for S04.02XS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S04.02XS group to?
S04.02XS sits in MDC 01 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 091Other Disorders of Nervous System with MCCmedical
- 092Other Disorders of Nervous System with CCmedical
- 093Other Disorders of Nervous System without CC/MCCmedical
How is S04.02XS listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S04.02, the nearest indexed parent of S04.02XS. Use them to find the family, then select the specific code.
- Injury › optic chiasm
Code first — inherited from S04
The underlying condition below must be sequenced before S04.02XS. S04.02XS describes a manifestation and cannot be the principal or first-listed diagnosis.
- any associated intracranial injury (S06.-)
Use additional code — inherited from Chapter 19
Report an additional code alongside S04.02XS to fully describe the condition. S04.02XS is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from S04.0
Report an additional code alongside S04.02XS to fully describe the condition. S04.02XS is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S04.02XS, but a patient may have both at the same time. When documentation supports it, S04.02XS and the excluded code may both be reported.
Excludes2 — not included here — inherited from S00-S09
The conditions below are not part of S04.02XS, but a patient may have both at the same time. When documentation supports it, S04.02XS and the excluded code may both be reported.
- burns and corrosions (T20-T32)
- effects of foreign body in ear (T16)
- effects of foreign body in larynx (T17.3)
- effects of foreign body in mouth NOS (T18.0)
- effects of foreign body in nose (T17.0-T17.1)
- effects of foreign body in pharynx (T17.2)
- effects of foreign body on external eye (T15.-)
- frostbite (T33-T34)
- insect bite or sting, venomous (T63.4)
Code also — inherited from S00-S09
Two codes may be needed to describe the condition fully. Whether S04.02XS is sequenced first depends on the reason for the encounter.
- for any associated infection
Code also — inherited from S04
Two codes may be needed to describe the condition fully. Whether S04.02XS is sequenced first depends on the reason for the encounter.
How long has S04.02XS existed?
S04.02XS 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.