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ICD-10-CM Current in FY 2027

S00.521A

Blister (nonthermal) of lip, initial encounter

Release
FY 2027
Effective

Hierarchy

Where S00.521A sits in the official hierarchy. Each level is the code it is classified under.

  1. S00 Superficial injury of head
  2. S00.5 Superficial injury of lip and oral cavity
  3. S00.52 Blister (nonthermal) of lip and oral cavity
  4. S00.521 Parent Blister (nonthermal) of lip
  5. S00.521A This code Blister (nonthermal) of lip, initial encounter

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Excludes1

diffuse cerebral contusion ( S06.2- )

Inherited from S00 — Superficial injury of head

Excludes1

focal cerebral contusion ( S06.3- )

Inherited from S00 — Superficial injury of head

Excludes1

injury of eye and orbit ( S05 .-)

Inherited from S00 — Superficial injury of head

Excludes1

open wound of head ( S01 .-)

Inherited from S00 — Superficial injury of head

7th Character

The appropriate 7th character is to be added to each code from category S00

Inherited from S00 — Superficial injury of head

7th Character

A - initial encounter

Inherited from S00 — Superficial injury of head

7th Character

D - subsequent encounter

Inherited from S00 — Superficial injury of head

7th Character

S - sequela

Inherited from S00 — Superficial injury of head

Version History

How S00.521A appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Blister (nonthermal) of lip, initial encounter

  2. FY 2026 Effective

    Unchanged

    Blister (nonthermal) of lip, initial encounter

Other codes under S00.521

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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