S05.21XA vs S05.21XD

S05.21XA (Ocular laceration and rupture with prolapse or loss of intraocular tissue, right eye, initial encounter) compared with S05.21XD (Ocular laceration and rupture with prolapse or loss of intraocular tissue, right eye, subsequent encounter), from the official CMS tabular data. S05.21XA and S05.21XD code the same injury at a different phase of treatment. MedCoder-derived

Relationship

Review

Encounter relationship

S05.21XA

Initial encounter

Ocular laceration and rupture with prolapse or loss of intraocular tissue, right eye, initial encounter

↔

S05.21XD

Subsequent encounter

Ocular laceration and rupture with prolapse or loss of intraocular tissue, right eye, subsequent encounter

Same underlying diagnosis, different encounter phase.

The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.

Source: ICD-10-CM Official Guidelines, Section I.C.19.a

Can these codes be reported together?

Same injury, other encounter phase. S05.21XA and S05.21XD code the same injury at a different phase of treatment, set by the 7th character.

The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.

Side by side

	S05.21XAOcular laceration and rupture with prolapse or loss of intraocular tissue, right eye, initial encounter	S05.21XDOcular laceration and rupture with prolapse or loss of intraocular tissue, right eye, subsequent encounter
Billing status	Billable	Billable
Classification	S00-T88 — Injury, poisoning and certain other consequences of external causes	S00-T88 — Injury, poisoning and certain other consequences of external causes
Definition	Ocular laceration and rupture with prolapse or loss of intraocular tissue, right eye, initial encounter is a billable ICD-10-CM diagnosis code (S05.21A).	Ocular laceration and rupture with prolapse or loss of intraocular tissue, right eye, subsequent encounter is a billable ICD-10-CM diagnosis code (S05.21D).
7th character	The appropriate 7th character is to be added to each code from category S05	The appropriate 7th character is to be added to each code from category S05
Includes	open wound of eye and orbit injuries of ear injuries of eye injuries of face [any part]	open wound of eye and orbit injuries of ear injuries of eye injuries of face [any part]

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources