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ICD-10-CM 2027 diagnosis code

S52.01Torus fracture of upper end of ulna

Not billable — use a more specific codeRequires 7th character

S52.01 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S52.01

S52.01 is the ICD-10-CM diagnosis code for Torus fracture of upper end of ulna. It belongs to category S52 (fracture of forearm), block S50-S59 (injuries to the elbow and forearm) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S52.0 (fracture of upper end of ulna), S52.01 is specifically for Torus fracture of upper end of ulna. Related codes cover unspecified fracture of upper end of ulna (S52.00), fracture of olecranon process without intraarticular extension of ulna (S52.02), fracture of olecranon process with intraarticular extension of ulna (S52.03), fracture of coronoid process of ulna (S52.04) and other fracture of upper end of ulna (S52.09).

Codes in this range require a 7th character: A for initial encounter for closed fracture, D for subsequent encounter for fracture with routine healing, G for subsequent encounter for fracture with delayed healing, K for subsequent encounter for fracture with nonunion, P for subsequent encounter for fracture with malunion and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to all codes in subcategory S52.01

  • Ainitial encounter for closed fracture
  • Dsubsequent encounter for fracture with routine healing
  • Gsubsequent encounter for fracture with delayed healing
  • Ksubsequent encounter for fracture with nonunion
  • Psubsequent encounter for fracture with malunion
  • Ssequela

Notes that apply from higher levels

Instructions written at a parent level also apply to S52.01.

› From S52.0 Fracture of upper end of ulna
Excludes2
  • fracture of elbow NOS (S42.40-)
  • fractures of shaft of ulna (S52.2-)
› From S52 Fracture of forearm
Note
  • A fracture not indicated as displaced or nondisplaced should be coded to displaced
  • A fracture not indicated as open or closed should be coded to closed
  • The open fracture designations are based on the Gustilo open fracture classification
Excludes1
  • traumatic amputation of forearm (S58.-)
Excludes2
  • fracture at wrist and hand level (S62.-)
  • periprosthetic fracture around internal prosthetic elbow joint (M97.4)

Broader instructions also apply from S50-S59 Injuries to the elbow and forearm and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to S52.01.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about S52.01

Is S52.01 billable?

No. S52.01 is a header code. Report one of its more specific subcodes instead.