S11.20XA vs S11.20XD

S11.20XA (Unspecified open wound of pharynx and cervical esophagus, initial encounter) compared with S11.20XD (Unspecified open wound of pharynx and cervical esophagus, subsequent encounter), from the official CMS tabular data. S11.20XA and S11.20XD code the same injury at a different phase of treatment. MedCoder-derived

Relationship

Review

Encounter relationship

S11.20XA

Initial encounter

Unspecified open wound of pharynx and cervical esophagus, initial encounter

↔

S11.20XD

Subsequent encounter

Unspecified open wound of pharynx and cervical esophagus, 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. S11.20XA and S11.20XD 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

	S11.20XAUnspecified open wound of pharynx and cervical esophagus, initial encounter	S11.20XDUnspecified open wound of pharynx and cervical esophagus, subsequent encounter
Billing status	Billable	Billable
Classification	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
Definition	Unspecified open wound of pharynx and cervical esophagus, initial encounter is a billable ICD-10-CM diagnosis code (S11.20XA).	Unspecified open wound of pharynx and cervical esophagus, subsequent encounter is a billable ICD-10-CM diagnosis code (S11.20XD).
7th character	The appropriate 7th character is to be added to each code from category S11	The appropriate 7th character is to be added to each code from category S11
Includes	injuries of nape injuries of supraclavicular region injuries of throat	injuries of nape injuries of supraclavicular region injuries of throat

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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